The peripheral nervous system contains how many pairs of spinal nerves?
a) 12 pairs
b) 21 pairs
c) 31 pairs
d) 39 pairs
The special organs, tissues or cells which detect stimuli are called……..
a) receptors
b) effectors
c) spinal nerves
d) cranial nerves
Muscles and glands in the body act as……..
a) receptors
b) effectors
c) spinal nerves
d) cranial nerves
Basic structural and functional unit of the nervous system is……….
a) cell
b) neurons
c) bones
d) none of these
All parts of the nervous system, i.e. brain spinal cord and nerves are made up of……..
a) nerve impulses
b) neurons
c) bones
d) none of these
Neurons carry messages in the form of ………
a) electro-magnetic waves
b) transverse waves
c) longitudinal waves
d) electro-chemical wave
