chpt 16: nervous tissue

Question 1

what NS structure creates ap which goes into the CNS to create perception and is considered a bundle of axons

Answer 1

nerves

Question 2

ganglia def

Answer 2

• nerves outside the cns

- contain cell bodies

Question 3

what is considered the brain of the gut

Answer 3

enteric plexuses

Question 4

enteric plexuses location

Answer 4

walls of GI tract organs

Question 5

enteric plexuses function

Answer 5

help regulate digestive sys activates

Question 6

what are specialized nerve endings

Answer 6

• sensory receptors

Question 7

3 functions of the ns

Answer 7

sensory, integrative, and motor

Question 8

what is the voluntary part of the PNS

Answer 8

somatic NS

Question 9

autonomic ns is

Answer 9

the involuntary par of the pns

Question 10

breakdown of the ANS

Answer 10

sympathetic and parasympathetic ns

Question 11

do neurons regenerate

Answer 11

no

Question 12

neuroglia structure

Answer 12

smaller than neurons

- can divide/ regenerate

Question 13

what is contributes to the size of the CNS

Answer 13

neuroglia

Question 14

what is the receiving/ input zone of a neuron

Answer 14

dendrite

Question 15

cell bodies aka perikaryon function

Answer 15

• proteins synthesis

Question 16

trigger zone of ap location

Answer 16

axon hillock

Question 17

the axon of a neuron is

Answer 17

• output zone

- takes ap away

Question 18

Nissl bodies function

Answer 18

• proteins synthesis

Question 19

lipofuscin location

Answer 19

cytoplasm of neuron cell body

Question 20

what is the pigment in neurons

Answer 20

lipofuscin, clumps of yellow- brown granules

Question 21

types of neuroglia in the CNS

Answer 21

• astrocytes (protoplasmic and fibrous)
• oligodendrocytes
• ependymal cells
• microglia

Question 22

which astrocyte is the grey mater

Answer 22

protoplasmic

Question 23

what do the fibrous astrocytes come in contact with

Answer 23

• bv
• neurons
• pia mater

Question 24

what causes axons regeneration in PNS

Answer 24

Schwann cells

Question 25

function of satellite cells in PNS

Answer 25

• surround cell bodies

- regulate exchange