Q. No.The cerebrospinal fluid, present in the ventricles, central canal and sub-arachanoidspace is produced by the capillaries of the:
1. lateral ventricle
2. arachnoid villi
3. choroid plexus
4. dural sinus
1. lateral ventricle
2. arachnoid villi
3. choroid plexus
4. dural sinus
The part of the cerebrum that produce a meaningful perceptual experience of the world, enable us to interact effectively, and support abstract thinking and language is called:
1. Pre-frontal cortex
2. Association area
3. Pre-central gyrus
4. Post-central gyrus
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What is true for mechanism of hearing in humans?
1. Transmission of vibration by stapes to oval window → Waves in lymphs → Ripple in tectorial membrane → Hair cells bend against basilar membrane → Nerve impulse generated in afferent neurons
2. Transmission of vibration by malleus to oval window → Waves in lymphs → Ripple in basilar membrane → Hair cells bend against tectorial membrane → Nerve impulse generated in afferent neurons
3. Transmission of vibration by stapes to oval window → Waves in lymphs → Ripple in basilar membrane → Hair cells bend against tectorial membrane → Nerve impulse generated in afferent neurons
4. Transmission of vibration by stapes to oval window → Waves in lymphs → Ripple in basilar membrane → Hair cells bend against reisnner’s membrane → Nerve impulse generated in efferent neurons
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Myelin sheath around the axons in the PNS is secreted by:
| 1. | oligodendrocytes | 2. | axons |
| 3. | Schwann cells | 4. | ependymal |
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The resting axonal membrane is impermeable/nearly impermeable to:
I. Sodium ions
II. Potassium ions
III. Negatively charged proteins
| 1. | Only I and II | 2. | Only I and III |
| 3. | Only II and III | 4. | I, II and III |
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Visual reflexes are coordinated by the part of the human brain known as the:
1. cerebellum
2. superior colliculus
3. inferior colliculus
4. cerebral peduncles
The part of the human brain widely regarded as ‘the gate-keeper to consciousness’ is the:
1. vasomotor center
2. corpora quadrigemina
3. diencephalon
4. reticular formation
| 1. | Medulla oblongata | 2. | Pons |
| 3. | Mid brain | 4. | Cerebellum |
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The auditory tube [also called as the Eustachian tube] functions in equalizing pressure between the middle ear and:
| 1. throat | 2. inner ear |
| 3. outer ear | 4. cochlea |
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