Chapter 17&18: Nervous Pathways & The Autonomic Nervous System

Question 1

whats system includes processes regulated below the conscious level

Answer 1

autonomic nervous system (ANS)/ autonomic motor system/ visceral motor system

Question 2

parts of the ANS

Answer 2

-visceral sensory
-blood vessels
-internal organs
-pressure/ O2 content

Question 3

function of the ANS

Answer 3

-maintain homeostasis
-initiates and transmits nerve impulses from the CNS to cardiac muscle, smooth muscle, and glands

Question 4

two types of autonomic motor neurons

Answer 4

-preganglionic neuron
-autonomic ganglion

Question 5

location of sympathetic preganglionic neuron cell bodies

Answer 5

lateral horn

Question 6

parts of the autonomic ganglion

Answer 6

-synapse
-cell body of second neuron

Question 7

what is a postganglionic axon?

Answer 7

extends from the cell body to an effector such as cardiac muscle, smooth muscle, or a gland

Question 8

destination of the postganglionic axon

Answer 8

effector organ

Question 9

what are the two cells of the ANS

Answer 9

-preganglionic cells
-postganglionic cells

Question 10

why are there two cells in the ANS?

Answer 10

more connections

Question 11

function of preganglionic cells

Answer 11

synapse w/ multiple post-ganglionic cells

Question 12

function of postganglionic cells

Answer 12

synapse w/ multiple pre-ganglionic cells

Question 13

function of sympathetic division

Answer 13

prepares body for emergencies

Question 14

preganglionic motor neurons

Answer 14

-thoracolumbar (& sacral) origin: branched axons
-autonomic ganglion: synapse

Question 15

location of sympathetic trunk ganglia

Answer 15

lateral to vertebral column

Question 16

where are the sympathetic ganglionic neuron cell bodies housed?

Answer 16

sympathetic trunk ganglia

Question 17

features of sympathetic trunk ganglia

Answer 17

-paired
-linked
-rami communicantes

Question 19

prevertebral ganglia

Answer 19

-unpaired
-anterior to vertebrae
-unpaired branches of aorta