Anatomy Lecture Test 2

Front 1

ANS, aka Visceral Motor System, controls

Back 1

automatic, involuntary functions

Front 2

2 divisions

Back 2

parasympathetic (R & R)
sympathetic (fight or flight)

Front 3

Contains motor neurons which innervate these structures:

Back 3

cardiac muscle, smooth muscle, glands

Front 4

Motor neurons are organized in a two neuron chain between the CNS and effector organ

Back 4

a preganglionic neuron in the CNS, and a postganglionic neuron in the PNS.

Front 5

preganglionic nerve cell bodies are located in

Back 5

the intermediolateral cell column (IML)

Front 6

preganglionic nerve fibers exit the CNS

Back 6

via ventral spinal nerve roots to enter spinal nerves T1-L2 and pass thru the white communicating rami (14 pairs)

Front 7

preganglionic nerve fibers enter the sympathetic chain ganglia to

Back 7

1) synapse with postganglionic neurons at the same lever. 2) ascend to higher lever or descend to a lower level to synapse. 3) continue on to a collateral ganglion in the abdominal or pelvic cavity before synapsing.

Front 8

sympathetic chain ganglion

Back 8

bilateral structures located adjacent to (parallel) the vertebral column. Extend from base of skull to coccyx.

Front 9

sympathetic chain ganglion are connected to spinal nerves by

Back 9

white communicating rami (14 pairs) preganglionic.
Gray communicating rami (31 pairs) postganglionic.

Front 10

components of the Visceral Reflex Arc

Back 10

sensory neuron (GVA)
connecting neuron (in spinal cord)
two motor neurons (GVE), including pregang and postgang.

Front 11

pregang parasympathetic neurons originate

Back 11

in brain stem motor nuclei associated with CN 3, 7, 9, and 10

Front 12

preganglionic nerve fibers are distributed to the cranial region

Back 12

in conjunction with 4 parasympathetic ganglia associated with CN 3, 7, 9

Front 13

pregang nerve fibers are also distributed to

Back 13

thoracic and abdominal viscera via CN 10. and synapse with walls of target organs

Front 14

short postgang fibers are contained entirely within

Back 14

walls of target organs.

Front 15

pregang nerve fibers exit the CNS via

Back 15

ventral spinal nerve roots of S2-S4 to enter the pelvic splanchnic nerves (nervi erigentes)

Front 16

pelvic splanchnic nerves are distributed to

Back 16

the pelvic viscera and external genitalia

Front 17

in the sacral region, the pregang fibers

Back 17

synapse in the walls of the target organs with short postgang neurons

Front 18

postgang neurons are contained

Back 18

entirely within the walls of the target organs

Front 19

parasympathetic NTs

Back 19

pre-acetylcholine
post-acetylcholine

Front 20

sympathetic

Back 20

pre-acetylcholing
post-norepinephrine

Front 21

sympathetic (sweat glands)

Back 21

pre-acetylcholine
post-acetylcholine

Front 22

sympathetic

Back 22

pre-acetylcholine (suprarenal medulla- secretes epinephrine into blood stream)