Q. No.Olfactory epithelium extends directly into which of the following extensions of the brain’s limbic system?
1. Amygdala
2. Olfactory lobe
3. Septum
4. Hippocampus
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Membranous labyrinth of the inner ear is surrounded by:
| 1. Perilymph | 2. Endolymph |
| 3. Hemolymph | 4. Air |
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The space between the cornea and the lens in human eye is filled with:
| 1. Aqueous humor | 2. Vitreous humor |
| 3. Lymph | 4. Air |
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The ear ossicles transmit sound waves to:
| 1. Ear drum | 2. Oval window |
| 3. Round window | 4. Cochlear duct |
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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
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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 |
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The scala vestibuli and scala tympani contain perilymph and are connected at the:
| 1. cochlear duct | 2. helicotrema |
| 3. semicircular duct | 4. vestibule |
The cranial meninge that is in contact with the brain tissue is the:
| 1. Dura mater | 2. Arachanoid mater |
| 3. Pia mater | 4. Grey matter |
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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 |
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The change in electrical potential that occurs between the inside and outside of a nerve or muscle fiber when it is stimulated, serving to transmit nerve signals is called as:
1. Action potential
2. Threshold potential
3. Reversal potential
4. Excitatory post synaptic potential
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