Na⁺/K⁺ pump is associated with

1. passive transport

2. active transport

3. osmosis

4. imbibition.

The release of chemical messenger from synaptic vesicles is under the influence of these ion(s)
(1) CI^-

(2) Fe⁺⁺ and S⁺⁺

(3) Ca⁺⁺

(4) Mg⁺⁺ and Sr⁺⁺

Which of the following is true for the function of labelled parts in the diagram below?

(1) A - Blind spot  -   Image is formed here 

(2) B - Fovea       - No visual activity is present

(3) C - Cornea      - Helps to hold lens in place

(4) D - Iris          - Visible coloured portion of eye

Which of the following is correctly labelled?
(1) A: Reissner's membrane

(2) B:Scala vestibuli

(3) C: Basilar membrane

(4) D: Tectorial membrane

Given is the diagrammatic representation of the sectional view of cochlea. Select the correct option regarding it.

(a) A - Organ of corti-responsible for maintenance of balance of the body and posture.
(b) B - Scala vestibuli-filled with endolymph that ends at the round window.
(c) C - Scala tympani- terminates at the round window which opens to the middle ear.
(d) D - Basilar membrane nerve impulses are generated against it.

If medulla oblongata is destroyed then which of the following functions wil be effected ?
(1) No thermoregulation

(2) No vision

(3) No memory

(4) No response when pricked with needle

A small rise in the body temperature of humans is corrected by

(i) sweating
(ii) dilating the skin arteries
(iii) constricting the skin arteries
(iv) increased tension of muscles in the skin.

(1) (i) only

(2) (ii) only

(3) (i) and (ii)

(4) (iii) and (iv)

The cavity of diencephalon is known as 
(1) first ventricle

(2) second ventricle

(3) third ventricle

(4) fourth ventricle

Pacinian corpuscles occur in the skin of certain parts of body in mammals. These are

(1) type of glands

(2) pain receptors

(3) naked tactile receptors

(4) encapsulated pressure receptors.