Biology Multiple Choice Questions and Answers for Different Competitive Exams

Multiple Choice Questions on Nervous System

1. Which part of human brain is concerned with the regulation of body temperature and urge for eating are contained in ?
a) cerebellum
b) cerebrum
c) medulla oblongata
d) hypothalamus

2. Cornea transplant in humans is almost never rejected. This is because
a) it is composed of enucleated cells
b) it is a non living layer
c) it has no blood supply
d) its cells are least penetrable by bacteria
3. Which one of the following is the correct difference between rod cells and cone cells of our retina?
Characteristics
Rod cells
Cone cells
a) Overall functions Vision in poor light Colour vision and detailed vision in bright light.
b) Distribution More concentrated in the centre of retina Evenly distributed all over retina
c) Visual acuity high low
d) Visual pigment contained Iodopsion Rhodopsin

4. During the propagate ion of a nerve impulse, the action potential results from the movement of
a) K+ions from intracellular fluid to extracellular fluid
b) K+ions from extracellular fluid to intracellular fluid
c) Na+ions from extracellular fluid to intracellular fluid
d Na+ions from intracellular fluid to extracellular fluid

5. Alzhemer’s disease in humans is associated with the deficiency of
a) dopamine
b) glutamic acid
c) acetylcholine
d) gamma aminobutyric acid

6. Sympathetic nervous system induces
parasympathetic and symapathetic nerve
a) Heart beat
b) Secretion of saliva
c) Secretion of digestive juices
d) all of these

7. Which of the following is the example of the action of the autonomous nervous system?
a) Swallowing of food
b) papillary reflex
c) knee jerk response
d) peristalsis of the intestine

8. In the resting state of the neural membrane, diffusion due to concentration gradient, if allowed would drive
a) K+ into the cell
b) K+ and Na+ out of the cell
c) Na+ into the cell
d) Na+ out of the cell

9. Depolarization of axolema during nerve conduction takes place because of
a) equal amount of Na+ and K+ move out across axolema
b) Na+ move inside and K+move more outside.
c) more Na+ outside
d) none of the above

10. Select the answer with correct matching of the structure, its source and function
Structure Location Function
a) Eustachian Anterior part of internal ear Equalizes air pressure on either sides of tympanic membrane
b) Cerebellum Mid brain Controls respiration and gastric secretions
c) Hypothalamus forebrain Controls body temperature, urge for eating and drinking.
d) blindspot Near the place where optic nerve leaves the eye Rods and cones are present but inactive here.

Learn more:
Answers:
1. d) hypothalamus
2. c) it has no blood supply
3.a) Overall functions - Vision in poor light - Colour vision and detailed vision in bright light.
4. c) Na+ions from extracellular fluid to intracellular fluid
5. c) acetylcholine
6. a) Heart beat
7. d) peristalsis of the intestine
8. c) Na+ into the cell
9. a) equal amount of Na+ and K+ move out across axolema
10. c) Hypothalamus – forebrain - Controls body temperature, urge for eating and drinking.

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