part 1

Question 1

parts of nervous system

Answer 1

Central nervous system (includes brain and the spinal cord) and PNS (includes all the sensory and motor nerves)

Question 2

sympathetic neural system

Answer 2

works under emergency conditions of our body which includes the 3 f- fright, flight and fight

Question 3

sns leads to

Answer 3

pupil dilation, heart beats faster, bronchioles dilate, sweat glands stimulates secretion, liver converts glycogen to glucose, uterus vaginal contraction, digestive system decreases

Question 4

what is the structural and functional unit of neural system

Answer 4

neurons which are composed of three major parts dendrites, cell body and axon

Question 5

difference between dendrite and axon

Answer 5

dendrites are 0-many,they have tapering ends, it carries impulses towards the cell body whereas axons are unbranched and long and only one, it carries impulses against the cell body

Question 6

neuron: multipolar

Answer 6

axon: 1 and dendrite: several. They are found in the grey matter of brain(cerebral cortex)

Question 7

neuron: bipolar

Answer 7

axon: 1 and dendrite: 1. They are found in the retina of eyes, olfactory epithelium, cochlear and vestibular ganglia.

Question 8

unipolar

Answer 8

axon: 1 and dendrite : none. They are found in the early embryos

Question 9

pseudounipolar

Answer 9

axon: 1 and dendrite: 1. they are found in the dorsal root ganglia of spinal nerves