Q. No.The highest visual acquity in the human eye is at:
1. optic tract
2. macula lutea
3. fovea centralis
4. optic disc
1. optic tract
2. macula lutea
3. fovea centralis
4. optic disc
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What is true if an object that is more than 20 feet from the eye and is clearly focused on the retina?
1. lens is most strong and refractory
2. lens is not refracting the light
3. ciliary muscle is relaxed
4. zonular fibers of the suspensory ligament are relaxed
Four cavities located within the brain that contain cerebral spinal fluid are known as:
| 1. | sinusoids | 2. | vesicles |
| 3. | ventricles | 4. | lobules |
The outer covering of gray matter over the hemispheres is called as the cerebral:
| 1. | cortex | 2. | medulla |
| 3. | gyri | 4. | sulci |
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The cochlear division of the VIII cranial nerves transmits impulses from the cochlea of the ear to:
1. the hypotahlamus
2. the parietal lobes
3. the temporal lobes
4. the postcentral gyrus
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The waves most likely to appear on an EEG due to active, busy or anxious thinking and active concentration would be:
1. alpha wave
2. beta wave
3. theta wave
4. delta wave
Pons varolli of the brain stem does not have:
1. cardiac control center
2. pneumotaxic center
3. fibers of cerebellar peduncle
4. nuclei where some cranial nerves originate
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All the following statements regarding the glial cells are correct except:
1. They are rare when compared to neurons
2. They can respond to injury
3. They function in myelin sheath synthesis
4. They help in regulation of neuronal environment
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In a single-ion system, reversal potential is synonymous with equilibrium potential; their numerical values are identical, and it:
1. Is a function of the concentration of that ion on the extracellular side of the membrane
2. Is a function of the concentration of that ion on the intracellular side of the membrane
3. Is the potential at which there is no movement of that ion across the membrane due to electrochemical forces
4. Is the potential at which there is equal movement of that ion into and out of the cell across the membrane due to electrochemical forces
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