১.
Macula receives collateral blood supply from
ব্যাখ্যা
Blood supply of macula:
1. Posterior Cerebral Artery
2. Middle Cerebral Artery
Snell 8th- 473
1. Posterior Cerebral Artery
2. Middle Cerebral Artery
Snell 8th- 473
PrepBank · বিষয়ভিত্তিক প্রশ্ন
Special Senses & Others
Special Senses & Others
PrepBank · পাতা ১ / ১ · ১–৯১ / ৯১
২.
Cytoskeleton filaments excludes:
৩.
Lysosomes contain -
ব্যাখ্যা
Explanations:
Hydrolytic enzymes are highly concentrated in lysosomes. Ordinarily, the membrane surrounding the Lysosome prevents the enclosed hydrolytic enzymes from coming into contact with other substances in the cell and therefore prevents their digestive actions.
Hydrolytic enzymes are highly concentrated in lysosomes. Ordinarily, the membrane surrounding the Lysosome prevents the enclosed hydrolytic enzymes from coming into contact with other substances in the cell and therefore prevents their digestive actions.
৪.
Membranous organelle
৫.
By opthalmoscope which structure cant be seen?
ব্যাখ্যা
Structure seen through opthalmoscope:
1.Optic Disc
2.Retina
3.Blood vessels
4.Macula
Snell 8th-349
1.Optic Disc
2.Retina
3.Blood vessels
4.Macula
Snell 8th-349
৬.
Maintenance of nearly constant internal environment is called
৭.
Which of the followings occur as a result of lesion of lateral fibers in left side of optic chiasma?
ব্যাখ্যা
Explanation :
Lesion of left optic nerve: Total blindness of left eye.
Lesion of right optic nerve: Total blindness of right eye.
Lesion of lateral fibers in left side of optic chiasma: Left nasal hemianopia.
Lesion of lateral fibers in right side of optic chiasma: Right nasal hemianopia C + D.
Lesion of lateral fibers in both sides of optic chiasma: Binasal hemianopia.
Lesion of medial fibers in optic chiasma: Bitemporal hemianopia.
Lesion of left optic radiation: Right homonymous hemianopia.
Lesion of right optic radiation: Left homonymous hemianopia.nknown.
৮.
Which of the following area is concerned with the movement of eyes?
ব্যাখ্যা
Explanation : Three areas are present in visual cortex:
i. Primary visual area (area 17), which is concerned with the perception of visual impulses.
ii. Secondary visual area or visual association area (area 18), which is concerned with the interpretation of visual impulses.
iii. Occipital eye field (area 19), which is concerned with the movement of eyes (Chapter 152). Pretectal nucleus is concerned with light reflexes.
৯.
Bulk transport system
১০.
Which lens is used in myopia?
১১.
Movement of chromosome during cell division
১২.
Which is substrate for Lysosomal enzyme cathepsins?
ব্যাখ্যা
Reference: Ganong 26th; Table-2.1
১৩.
Which one of following is an example of secondary active counter transport-?
ব্যাখ্যা
★Examples of Secondary active transport-
-Na+-Ca++ counter transport
-Na+-H+ counter transport
-Chloride shift
১৪.
Which is best matched regarding MPS
১৫.
Lacrimal Gland is supplied by
ব্যাখ্যা
The lacrimal gland receives secretomotor PNS through Pterygopalatine ganglion
Innervation
Sensory: lacrimal nerve (from ophthalmic nerve)
Parasympathetic: greater petrosal nerve (from facial nerve)
Sympathetic: deep petrosal nerve (from internal carotid plexus)
Snell 8th - 415 Review Q- 15
Innervation
Sensory: lacrimal nerve (from ophthalmic nerve)
Parasympathetic: greater petrosal nerve (from facial nerve)
Sympathetic: deep petrosal nerve (from internal carotid plexus)
Snell 8th - 415 Review Q- 15
১৬.
Which is not correct for composition of cell membrane:
১৭.
Which of the following neurotransmitter is not found in retinna?
ব্যাখ্যা
Explanation :
Ref : Sembulingam 6th edition (Table- 141.1)
Ref : Sembulingam 6th edition (Table- 141.1)
১৮.
A 67-year-old man presents to accident and emergency with a 3-day history of shortness of breath. On examination you palpate the radial pulse and notice that the patient has an irregular heart beat with an overall rate of 140 bpm. You request an electrocardiogram (ECG) which reveals that the patient is in atrial fibrillation. Which of the following would you expect to see when assessing the JVP?
ব্যাখ্যা
The JVP provides clinicians with information regarding right atrial pressures and filling. It mainly consists of five wave forms:
1 a wave - representing atrial systole;
2 c wave - representing closure of the tricuspid valve (this wave is not usually visible);
3 x descent - representing a fall in atrial pressure during ventricular systole;
4 v wave - representing atrial filling against a closed tricuspid valve;
5 y descent - representing the opening of the tricuspid valve.
In atrial fibrillation, the 'a waves' are absent (D) due to dysfunctional atrial systole. A raised JVP with normal waveform pattern (A) is usually seen in fluid overload and right heart failure. Large v waves (B) are usually seen in patients with tricuspid regurgitation. Cannon 'a waves' (C) are seen in patients with complete heart block, single chamber ventricular pacing, ventricular arrhythmias and ventricular ectopics. Large 'a waves' (E) can be seen in pulmonary hypertension and pulmonary stenosis.
1 a wave - representing atrial systole;
2 c wave - representing closure of the tricuspid valve (this wave is not usually visible);
3 x descent - representing a fall in atrial pressure during ventricular systole;
4 v wave - representing atrial filling against a closed tricuspid valve;
5 y descent - representing the opening of the tricuspid valve.
In atrial fibrillation, the 'a waves' are absent (D) due to dysfunctional atrial systole. A raised JVP with normal waveform pattern (A) is usually seen in fluid overload and right heart failure. Large v waves (B) are usually seen in patients with tricuspid regurgitation. Cannon 'a waves' (C) are seen in patients with complete heart block, single chamber ventricular pacing, ventricular arrhythmias and ventricular ectopics. Large 'a waves' (E) can be seen in pulmonary hypertension and pulmonary stenosis.
১৯.
Which type of cell junction found in endothelium of capillary:
২০.
Resonator is
ব্যাখ্যা
The three major organs of articulation are the lips,tongue, and soft palate.
The resonators include the mouth, the nose and associated nasal sinuses, the pharynx, and even the chest cavity.
The resonators include the mouth, the nose and associated nasal sinuses, the pharynx, and even the chest cavity.
২১.
The sensory organ of hearing is situated on
ব্যাখ্যা
This sensory organ of the hearing is situated on the basilar membrane. It is spread like a ribbon along the entire length of basilar membrane.
২২.
Which of the following transport processes is involved if transport of glucose from the intestinal lumen into a small intestinal cell is inhibited by abolishing the usual Na+ gradient across the cell membrane?
ব্যাখ্যা
Explanations:
In the usual Na+ gradient, the [Na+] is higher in extracellular than in intracellular fluid (maintained by the Na+–K+ pump). Two forms of transport are energized by this Na+ gradient cotransport and countertransport. Because glucose is moving in the same direction as Na+, one can conclude that it is cotransport.
In the usual Na+ gradient, the [Na+] is higher in extracellular than in intracellular fluid (maintained by the Na+–K+ pump). Two forms of transport are energized by this Na+ gradient cotransport and countertransport. Because glucose is moving in the same direction as Na+, one can conclude that it is cotransport.
২৩.
Which of the followings is known as auditopsychic area?
ব্যাখ্যা
Explanation : Cortical auditory centers are in the temporal lobe of cerebral cortex. Auditory areas are:
1. Primary auditory area, which includes area 41, area 42 and Wernicke area.
2. Secondary auditory area or auditopsychic area, which includes area 22
Ref : Sembulingam 6th edition (Page- 1014)
1. Primary auditory area, which includes area 41, area 42 and Wernicke area.
2. Secondary auditory area or auditopsychic area, which includes area 22
Ref : Sembulingam 6th edition (Page- 1014)
২৪.
A/T ratio of DNA
২৫.
Vestibular ganglion is first order neuron of
ব্যাখ্যা
Vestibular ganglion is first order neuron of balance or equilibrium
২৬.
Which one of following is not a lysosomal enzyme-?
ব্যাখ্যা
★Lysosomal enzymes are-
-Ribonuclease
-Deoxyribonuclease
-Phosphate
-Glycosidases
-Arylsylfatases
-Collagenase
-Cathepsins
-Phospholipase
২৭.
Which of the followings act as taste recptor cell in taste bud?
ব্যাখ্যা
Explanation : Type of Cells in Taste Bud
1. Type I cells or sustentacular cells
2. Type II cells
3. Type III cells
4. Type IV cells or basal cells.
Type I cells and type IV cells are supporting cells. Type III cells are the taste receptor cells. Function of type II cell is unknown.
২৮.
Umami is a… word
২৯.
Which of the following is true regarding Visual pathway?
ব্যাখ্যা
Explanation : Optic tract is formed by uncrossed fibers of optic nerve on the same side and crossed fibers of optic nerve from the opposite side. Fibers from fovea do not enter superior colliculus. Supraoptic nucleus of hypothalamus: It is concerned with the retinal control of pituitary in animals. But in human, it does not play any important role. Fibers from lateral geniculate body pass through internal capsule and form optic radiation.
Ref : Sembulingam 6th edition (Page- 990,991)
Ref : Sembulingam 6th edition (Page- 990,991)
৩০.
Nonmembranous organelle:
৩১.
Regarding Na+-K+ pump;
৩২.
Which of the following would occur as a result of the inhibition of Na+,K+-ATPase?
ব্যাখ্যা
Inhibition of Na+,K+-adenosine triphosphatase (ATPase) leads to an increase in intracellular Na+ concentration. Increased intracellular Na+ concentration decreases the Na+ gradient across the cell membrane, thereby inhibiting Na+–Ca2+ exchange and causing an increase in intracellular Ca2+ concentration. Increased intracellular Na+ concentration also inhibits Na+–glucose cotransport.
৩৩.
Which of the following has zero protein content
৩৪.
Processing, packaging, labelling & delivery of proteins & lipids
৩৫.
The three major organs of articulation excludes
ব্যাখ্যা
Reference: Guyton 14th; P- 501
৩৬.
Non-chromosomal DNA found in-
৩৭.
Which organelle is important in specialized cellular signalling?
ব্যাখ্যা
Explanations:
Cells contain a variety of organelles that perform specialized cell functions. The nucleus is an organelle that contains DNA and is the site of gene transcription. The endoplasmic reticulum and the Golgi apparatus are important in protein processing and the targeting of proteins to correct compartments within the cell. Lysosomes and peroxisomes are membranebound organelles that contribute to protein and lipid processing. Mitochondria are organelles that allow for oxidative phosphorylation in eukaryotic cells and also are important in specialized cellular signaling.
Cells contain a variety of organelles that perform specialized cell functions. The nucleus is an organelle that contains DNA and is the site of gene transcription. The endoplasmic reticulum and the Golgi apparatus are important in protein processing and the targeting of proteins to correct compartments within the cell. Lysosomes and peroxisomes are membranebound organelles that contribute to protein and lipid processing. Mitochondria are organelles that allow for oxidative phosphorylation in eukaryotic cells and also are important in specialized cellular signaling.
৩৮.
Manifestations of shock includes all of the following except?
ব্যাখ্যা
Explanation:
Manifestations of shock
• Decrease in cardiac output
• Low blood pressure
• Rapid thready pulse
• Pale and cold skin
• Increase in respiratory rate
• Restless or lethargy
৩৯.
Vasogenic shock excludes
৪০.
Types of RNA excludes:
ব্যাখ্যা
RNA three types
Messenger RNA , Ribosomal RNA, Transfer RNA
Messenger RNA , Ribosomal RNA, Transfer RNA
৪১.
Contraction of medial rectus helps in accommodation of eye by
৪২.
Cell membrane is semipermeable because of having
ব্যাখ্যা
Explanations:
The cell and the intracellular organelles are surrounded by semipermeable membranes. Biological membranes have a lipid bilayer core that is populated by structural and functional proteins. These proteins contribute greatly to the semipermeable properties of biological membrane.
The cell and the intracellular organelles are surrounded by semipermeable membranes. Biological membranes have a lipid bilayer core that is populated by structural and functional proteins. These proteins contribute greatly to the semipermeable properties of biological membrane.
৪৩.
Cell membrane is semipermeable because of having
ব্যাখ্যা
Explanations:
The cell and the intracellular organelles are surrounded by semipermeable membranes. Biological membranes have a lipid bilayer core that is populated by structural and functional proteins. These proteins contribute greatly to the semipermeable properties of biological membrane.
The cell and the intracellular organelles are surrounded by semipermeable membranes. Biological membranes have a lipid bilayer core that is populated by structural and functional proteins. These proteins contribute greatly to the semipermeable properties of biological membrane.
৪৪.
Lesion of left optic nerve results in
৪৫.
Which of the following does not support accommodation reflex?
ব্যাখ্যা
Explanation : Accommodation is a reflex action. When a person looks at a near object after seeing a far object, three adjustments are made in the eyeballs:
1. Convergence of the eyeballs due to contraction of the medial recti
2. Constriction of the pupil due to the contraction of constrictor pupillae of iris
3. Increase in the anterior curvature of the lens due to contraction of the ciliary muscle.
Ref : Sembulingam 6th edition (Page- 997)
1. Convergence of the eyeballs due to contraction of the medial recti
2. Constriction of the pupil due to the contraction of constrictor pupillae of iris
3. Increase in the anterior curvature of the lens due to contraction of the ciliary muscle.
Ref : Sembulingam 6th edition (Page- 997)
৪৬.
Which lens is used in myopia?
৪৭.
Port Wine birthmark is present in
৪৮.
Which of the followings is false regarding accommodation reflex?
ব্যাখ্যা
Explanation : In addition to increase in anterior curvature of the lens, two more adjustments are made in the eyeball during accommodation for near vision.
1. Convergence of both eyeballs: It is necessary to bring the retinal images on to the corresponding points
2. Constriction of pupil: It is necessary to:
i. Increase the visual acuity by reducing lateral chromatic and spherical aberrations
ii. Reduce the quantity of light entering eye
iii. Increase the depth of focus through more central part of lens as its convexity is increased.
Ref : Sembulingam 6th edition (Page- 996)
1. Convergence of both eyeballs: It is necessary to bring the retinal images on to the corresponding points
2. Constriction of pupil: It is necessary to:
i. Increase the visual acuity by reducing lateral chromatic and spherical aberrations
ii. Reduce the quantity of light entering eye
iii. Increase the depth of focus through more central part of lens as its convexity is increased.
Ref : Sembulingam 6th edition (Page- 996)
৪৯.
Lesion of left optic radiation results in
৫০.
Lipid layer of cell membrane is impermeable for:
৫১.
Half life of cobalt
৫২.
Receptor organ in otoliths is known as -
ব্যাখ্যা
Explanation : Receptor organ in semicircular canal is called crista ampullaris and that in otolith organ is called macula. These receptor organs contain the proprioceptors.
Ref : Sembulingam 6th edition (Page- 921)
Ref : Sembulingam 6th edition (Page- 921)
৫৩.
The Golgi complex-
ব্যাখ্যা
Golgi complex is a membrane bound organelle which helps in post translational modification of protein.
৫৪.
Stages of shock excludes
ব্যাখ্যা
Explanation:
Stages of shock
• A nonprogressive stage (sometimes called the compensated stage)
• A progressive stage
• An irreversible stage
৫৫.
The second-order auditory pathway neurons are made up
ব্যাখ্যা
The sequential steps are as follows:
1.The bipolar cells of the spiral ganglion, which are located in the cochlea’s modiolus, are the first-order neurons of the auditory pathway.
2. The second-order auditory pathway neurons are made up of neurons from the dorsal and ventral cochlear nuclei in the medulla oblongata.
3. Both the superior olivary nuclei and the lateral lemniscus nucleus comprise the third-order neurons.
4.The subcortical auditory centre is formed by the medial geniculate body, where the fibres of third-order neurons terminate.
5.The nerve fibres from the medial geniculate body travel as auditory radiation via the internal capsule to the temporal cortex.
6.In the midbrain, the inferior colliculus of the tectum receives some fibres from the medial geniculate body.
7.The reflex movements in response to auditory stimuli are mediated by the auditory radiation fibres.
8.The temporal lobe of the cerebral cortex houses the cortical auditory centres. The perception of auditory impulses, analysis of sound pitch and intensity, and identification of sound source are all concerns of the cortical auditory centres.
1.The bipolar cells of the spiral ganglion, which are located in the cochlea’s modiolus, are the first-order neurons of the auditory pathway.
2. The second-order auditory pathway neurons are made up of neurons from the dorsal and ventral cochlear nuclei in the medulla oblongata.
3. Both the superior olivary nuclei and the lateral lemniscus nucleus comprise the third-order neurons.
4.The subcortical auditory centre is formed by the medial geniculate body, where the fibres of third-order neurons terminate.
5.The nerve fibres from the medial geniculate body travel as auditory radiation via the internal capsule to the temporal cortex.
6.In the midbrain, the inferior colliculus of the tectum receives some fibres from the medial geniculate body.
7.The reflex movements in response to auditory stimuli are mediated by the auditory radiation fibres.
8.The temporal lobe of the cerebral cortex houses the cortical auditory centres. The perception of auditory impulses, analysis of sound pitch and intensity, and identification of sound source are all concerns of the cortical auditory centres.
৫৬.
Cell membrane is semipermeable because of having
ব্যাখ্যা
Explanations:
The cell and the intracellular organelles are surrounded by semipermeable membranes. Biological membranes have a lipid bilayer core that is populated by structural and functional proteins. These proteins contribute greatly to the semipermeable properties of biological membrane.
The cell and the intracellular organelles are surrounded by semipermeable membranes. Biological membranes have a lipid bilayer core that is populated by structural and functional proteins. These proteins contribute greatly to the semipermeable properties of biological membrane.
৫৭.
Local factors produce vasoconstriction-
ব্যাখ্যা
[Ganong 24th p-588]
৫৮.
Which of the bond doesnt hold Ag-Ab together
ব্যাখ্যা
When the antibody is highly specific, there are so many bonding sites that the antibody-antigen coupling is exceedingly strong,
held together by (1) hydrophobic bonding; (2) hydrogen bonding; (3) ionic attractions; and (4) Van der Waals forces.
It also obeys the thermodynamic mass action law
held together by (1) hydrophobic bonding; (2) hydrogen bonding; (3) ionic attractions; and (4) Van der Waals forces.
It also obeys the thermodynamic mass action law
৫৯.
Compensatory changes in hemorrhage include-
ব্যাখ্যা
Compensatory reactions activated by hemorrhage-
-Vasoconstriction
- Tachycardia
-Venoconstriction
-increase secretion of Catecholamines, vasopressin, EPO, Renin, Glucocorticoids, Aldosterone
-Tachypnoea
-Restlessness
৬০.
Gene is a part of
৬১.
There are ______ type of Retinal bipolar cell
ব্যাখ্যা
There are two types of bipolar cells:
a) OFF-center bipolar cells and
b) ON-center bipolar cells.
These cells respond in opposite ways to the glutamate released by the photoreceptors because they express different types of glutamate receptors. Like photoreceptors, the bipolar cells do not fire action potential and only respond with graded postsynaptic potentials
a) OFF-center bipolar cells and
b) ON-center bipolar cells.
These cells respond in opposite ways to the glutamate released by the photoreceptors because they express different types of glutamate receptors. Like photoreceptors, the bipolar cells do not fire action potential and only respond with graded postsynaptic potentials
৬২.
Inability to recognize or detect any odor
৬৩.
Which organelle sorts and packages proteins within a cell?
ব্যাখ্যা
Golgi apparatus sorts and packages proteins within a cell
৬৪.
Which of the followings act as third order neuron in Visual pathway?
ব্যাখ্যা
Explanation : First order neurons (primary neurons) are bipolar cells in the retina. Axons from the bipolar cells synapse with dendrites of ganglionic cells. Second order neurons (secondary neurons) are the ganglionic cells in ganglionic cell layer of retina. Axons of the ganglionic cells form optic nerve. Optic nerve leaves the eye and terminates in lateral geniculate body. Third order neurons are in the lateral geniculate body. Fibers arising from here, reach the visual cortex.
Ref : Sembulingam 6th edition (Page- 989)
Ref : Sembulingam 6th edition (Page- 989)
৬৫.
Which of the following is the amplitude of accommodation at 50 years age?
ব্যাখ্যা
Explanation : Amplitude of accommodation varies with age. Amplitude of accommodation at different age groups is: 10 years = 11.0 D, 20 years = 9.5 D, 30 years = 7.5 D, 40 years = 5.5 D, 50 years = 2.0 D, 60 years = 1.2 D, 70 years = 1.0 D.
Ref : Sembulingam 6th edition (Page- 998)
Ref : Sembulingam 6th edition (Page- 998)
৬৬.
Receptors are those in the rods and cones in the retina that respond to light are-
ব্যাখ্যা
Receptors are those in the rods and cones in the retina that respond to light are- photoreceptors
৬৭.
Enzyme found in lysosome:
৬৮.
Which of the followings is true regarding vestibular apparatus?
ব্যাখ্যা
Explanation : Superior semicircular canal gives response to rotation in anteroposterior plane (transverse axis). Horizontal semicircular canal gives response to rotation in horizontal plane (vertical axis). Semicircular canals are concerned with angular (rotatory) acceleration. Otolith organ is concerned with linear acceleration and detects acceleration in both horizontal and vertical planes. Utricle responds during horizontal acceleration and saccule responds during vertical acceleration.
Ref : Sembulingam 6th edition (Page- 924, 926)
Ref : Sembulingam 6th edition (Page- 924, 926)
৬৯.
Hair cells are present in
৭০.
Mortality rate in case of Galerina poisoining
৭১.
Basic substances of protoplasm exclude
৭২.
Membrane transport system with downhill electrochemical gradient
ব্যাখ্যা
Explanations:
• Membrane transport system with downhill electrochemical gradient-passive diffusion & facilitated diffusion.
• Membrane transport system with downhill electrochemical gradient- Primary active transport, Co transport & Counter transport
৭৩.
Argyll Robertson Pupil (ARP) -Not correct about ARP
ব্যাখ্যা
Argyll Robertson Pupil (ARP):
Hallmark of neurosyphilis
1. Light-near dissociation (no reaction to light but brisk response to near).
2. Both pupils usually involved, but the degree may be asymmetrical.
3. Pupils are small and frequently irregular in shape.
4. Pupils dilate poorly after instillation of mydriatics.
5. To make a diagnosis of ARP vision in the affected eye must be normal.
Hallmark of neurosyphilis
1. Light-near dissociation (no reaction to light but brisk response to near).
2. Both pupils usually involved, but the degree may be asymmetrical.
3. Pupils are small and frequently irregular in shape.
4. Pupils dilate poorly after instillation of mydriatics.
5. To make a diagnosis of ARP vision in the affected eye must be normal.
৭৪.
Pinocytosis is -
ব্যাখ্যা
[Ganong 24th p-48]
৭৫.
Which one is false about cell organelles?
৭৬.
Not a part of visual pathway
৭৭.
Medial geniculate body involve in
ব্যাখ্যা
Medial geniculate body involve in hearing.
৭৮.
Characteristics of active transport excludes:
ব্যাখ্যা
Membrane must be present.
৭৯.
The acetylcholine-gated channel doesnt allow to pass
ব্যাখ্যা
The acetylcholine-gated channel has a diameter of about 0.65 nanometer, which is large enough to allow the important positive ions-sodium (Na+), potassium (K+), and calcium (Ca2+)-to move easily through the opening. Patch clamp studies have shown that one of these channels, when opened by acetylcholine, can transmit 15,000 to 30,000 sodium ions in 1 millisecond. Conversely, negative ions, such as chloride ions, do not pass through because of strong negative charges in the mouth of the channel that repel these negative ions.
৮০.
Presbycusis is –
ব্যাখ্যা
Presbycusis is age related hearing impairment.
৮১.
Only water is transported through
৮২.
(MCT) recognizes
ব্যাখ্যা
The H+/monocarboxylate cotransporter (MCT) recognizes monocarboxylates such as lactate, pyruvate, acetoacetate, and β-hydroxybutyrate. It is a proton-driven transporter with a coupling stoichiometry of 1 H+ : 1 monocarboxylate and, thus, MCT is an electroneutral transporter (Fig. 4). The direction of transport is governed by the prevailing proton gradient.
৮৩.
Which is substrate for Lysosomal enzyme cathepsins?
ব্যাখ্যা
Reference: Ganong 26th; Table-2.1
৮৪.
Which of the followings act as centre for accommodation?
ব্যাখ্যা
Explanation : The center for accommodation lies in frontal eye field (area 8) that is situated in the frontal lobe of cerebral cortex.
Ref : Sembulingam 6th edition (Page- 997)
Ref : Sembulingam 6th edition (Page- 997)
৮৫.
Structural integrity of cell membrane provide by:
৮৬.
Which acts as microtubule-organizing centre?
ব্যাখ্যা
Explanations:
The centrosomes are microtubule-organizing centers (MTOCs) that contain γ-tubulin. The microtubules grow out of this γ-tubulin in the pericentriolar material. When a cell divides, the centrosomes duplicate themselves, and thepairs move apart to the poles of the mitotic spindle, where they monitor the steps in cell division.
The centrosomes are microtubule-organizing centers (MTOCs) that contain γ-tubulin. The microtubules grow out of this γ-tubulin in the pericentriolar material. When a cell divides, the centrosomes duplicate themselves, and thepairs move apart to the poles of the mitotic spindle, where they monitor the steps in cell division.
৮৭.
Maximum components of cell membrane
৮৮.
Which of the following is not a pupillary reflex?
ব্যাখ্যা
Explanation : Pupillary reflexes are classified into three types: 1. Light reflex 2. Ciliospinal reflex 3. Accommodation reflex.
Ref : Sembulingam 6th edition (Page- 994)
Ref : Sembulingam 6th edition (Page- 994)
৮৯.
Which of the followings does not form the pathway of light reflex?
ব্যাখ্যা
Explanation :
Ref : Sembulingam 6th edition (Figure- 169.1)
Ref : Sembulingam 6th edition (Figure- 169.1)
৯০.
Which of the followings is 2nd order neuron in auditory pathway?
ব্যাখ্যা
Explanation : Neurons of dorsal and ventral cochlear nuclei in the medulla oblongata form the second order neurons of auditory pathway.
Ref : Sembulingum 6th edition (Page- 1013)
Ref : Sembulingum 6th edition (Page- 1013)
৯১.
Medial geniculate body is concerned with -
ব্যাখ্যা
Medial geniculate Body is the-
-Relay station for auditory pulse
-Relay station for auditory pulse