Q. No.Mark the incorrectly matched pair regarding the structure with its location and functions:-
1.
Otolith organs
Located in the utriculus and sacculus, and is related to static equilibrium
2.
Organ of Corti
Located on the basilar membrane and contains hair cells that act as auditory receptors
3.
Visual cortex area
Located on the temporal lobe where sight impulses are analyzed and the retinal image is recognised.
4.
Ear ossicles
Located in the middle ear cavity and increase the efficiency of transmission of sound waves to the inner ear.
Which of the following would not occur when we do physical exercises?
(1) Increased energy demand
(2) Increased oxygen supply and increased urine formation
(3) Increased in the rate of respiration, heart beat
(4) Increased blood flow via blood vessels
Macula lutea …a...
Fovea…b....
(1) Yellow spot, dark spot
(2) Yellow spot, pit
(3) Pit, yellow spot
(4) Dark spot, pit
Vitreous humor is
(1) Thin watery fluid
(2) Thick watery fluid
(3) Transparent gel
(4) Translucent gel
Go through the above sectional view of Cochlea. Identify A to E
| Options: | A | B | C | D | |
| 1. | Scala vestibule | Scala media | Scala tympani | Basilar membrane | Reissner’s membrane |
| 2. | Scala media | Scala vestibule | Scala tympani | Basilar membrane | Reissner’s membrane |
| 3. | Scala tympani | Scala media | Scala vestibule | Basilar membrane | Reissner’s membrane |
| 4. | Scala vestibule | Scala media | Scala tympani | Reissner’s membrane | Basilar membrane |
The swollen base of semicircular canals containing projecting ridge is called–
1. Macula
2. Jacobson’s organ
3. Crista ampullaris
4. Organs of Corti
Which of the following receptors are specifically responsible for maintenance of balance of body and posture?
1. Basilar membrane and otoliths
2. Hair cells and organ of corti
3. Tectorial membrane and macula
4. Crista ampullaris and macula
Which of the following statements is not correct?
| 1. | An action potential in an axon does not move backward because the segment behind is in a refractory phase. |
| 2. | Depolarization of hair cells of cochlea results in the opening of the mechanically gated Potassium- ion channels. |
| 3. | Rods are very sensitive and contribute to daylight vision. |
| 4. | In the knee-jerk reflex, stimulus is the stretching of muscle and response is its contraction. |
The contraction of which of the following muscles will cause constriction of pupil in the presence of bright light?
1. Radial iris muscles
2. Circular iris muscles
3. Suspensory ligaments
4. Superior rectus
The point of most distinct vision in case of human eye has a high number of cone cells. This point is known as
1. Blind spot
2. Macula lutea
3. Fovea centralis
4. Limbus
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