Q. No.Membranous labyrinth of the inner ear is surrounded by:
1. Perilymph
2. Endolymph
3. Hemolymph
4. Air
The space between the cornea and the lens in human eye is filled with:
| 1. Aqueous humor | 2. Vitreous humor |
| 3. Lymph | 4. Air |
The ear ossicles transmit sound waves to:
| 1. Ear drum | 2. Oval window |
| 3. Round window | 4. Cochlear duct |
Consider the two statements:
| I: | Electric synapses are rare in our system. |
| II: | Impulse transmission across electric synapse is always faster than across a chemical synapse. |
1. Both I and II are correct and II explains I
2. Both I and II are correct and II does not explain I
3. Only I is correct
4. Only II is correct
The primary commissural region of the brain consisting of white matter tracts that connects the left and right cerebral hemispheres is called as:
| 1. | corpus striatum | 2. | corpus luteum |
| 3. | corpus callosum | 4. | corpus spongiosum |
Match each item in Column I [part of the brain] with one in Column II [function] and select the answer from the codes given below:
|
|
Column I |
|
Column II |
|
A. |
Medulla oblongata |
a. |
Motor control |
|
B. |
Pons varoli |
b. |
Hunger center |
|
C. |
Cerebellum |
c. |
Bridge between cerebellum and rest of brain |
|
D. |
Hypothalamus |
d. |
Gastric secretions, respiratory rhythm center |
Codes
| A | B | C | D | |
| 1. | c | d | b | a |
| 2. | d | c | a | b |
| 3. | c | d | a | b |
| 4. | d | c | b | a |
What causes the movement of the synaptic vesicles towards the membrane during transmission of impulse across a chemical synapse?
| 1. | Sodium | 2. | Calcium |
| 3. | cAMP | 4. | cGMP |
Reissner’s membrane in the inner ear separates the cochlear duct [scala media] from the:
| 1. round window | 2. scale vestibuli |
| 3. scala tympani | 4. basilar membrane |
Myelin sheath around the axons in the PNS is secreted by:
| 1. | oligodendrocytes | 2. | axons |
| 3. | Schwann cells | 4. | ependymal |
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