nervous system

Question 1

what is Perikaryon

Answer 1

• neuron cytoplasm

Question 2

function of the Neurofilaments/Neurotubules:

Answer 2

make up the neuron cytoskeleton

Question 3

Neurofibrils

Answer 3

• bundles of neurofilaments​

Question 4

Nissl bodies

Answer 4

• clusters of free ribosomes​

Question 5

axoplasm

Answer 5

• cytoplasm of the axon​

Question 6

Axon hillock

Answer 6

• area where the initial segment connects to the cell body​

Question 7

Collaterals

Answer 7

• branches off the axon

Question 8

axon terminals

Answer 8

• ends of axon telodendrias

Question 9

telodendria

Answer 9

ends of the axon and collaterals

Question 10

axoplasmic transport

Answer 10

the movement of material between the cell body and the axons​

Question 11

what 2 subdivisions does the does the PNS split into?

Answer 11

1. afferent = bring sensory info to CNS
2. efferent = bring motor commands out

Question 12

what are the two man branches of the nervous system?

Answer 12

1. CNS (brain and spinal cord)
2. PNS (everything else)

Question 13

what does the afferent split into?

Answer 13

1. somatic
2. visceral

Question 14

what two subdivisions does the efferent division split into?

Answer 14

1. somatic nervous system (SNS)
2. automatic nervous system (ANS)

Question 15

what 2 subdivisions does the ANS split into?

Answer 15

1. sympathetic nervous system
2. parasympathetic nervous system