Autonomic NS - Parasymp Div

Question 1

Parasymp fibers w CN III inn what in the eye?

Answer 1

smooth mm in the eye that cause pupil constriction and lens bulging (close vision)

Question 2

The parasymp div of the ANS is known as the ____________ div due to its regional locations.

Answer 2

craniosacral

Question 3

For the cranial portion, the presynaptic cell bodies lie in…

Answer 3

the brainstem (then run along several CN)

Question 4

Where are presyn and postsyn cell bodies for CN III parasymp fibers?

Answer 4

presyn cell body – midbrain (Edinger-Westphal nucleus)

postsn cell body – ciliary ganglion

Question 5

Parasymp fibers w CN VII inn what in the head?

Answer 5

glands (submandibular, sublingual, lacrimal, nasal)

Question 6

Where are presyn and postsyn cell bodies for CN VII parasymp fibers traveling to the lacrimal and nasal glands?

Answer 6

presyn cell body – pons

postsyn cell body – pterygopalatine (sphenopalatine) ganglion

Question 7

Where are presyn and postsyn cell bodies for CN VII parasymp fibers traveling to the submandibular and sublingual glands?

Answer 7

presyn cell body – pons

postsyn cell body – submandibular ganglion

Question 8

Parasymp fibers w CN IX inn…

Answer 8

secretion of parotid gland

Question 9

Where are presyn and postsyn cell bodies for CN IX parasymp fibers?

Answer 9

presyn cell body – medulla

postsyn cell body – otic ganglion

Question 10

Parasymp fibers w CN X inn…

Answer 10

visceral organs of thorax and most of abdomen
stim digestion, slow HR and respiration

Question 11

Where are presyn and postsyn cell bodies for CN X parasymp fibers?

Answer 11

presyn cell body – medulla

postsyn cell body – near their effector organ

Question 12

Sacral parasymp outflow comes from what levels of the SC?

Answer 12

S2, S3, S4

Question 13

Sacral parasymp fibers supply…

Answer 13

organs of pelvis, distal 1/2 of large intestine, bladder, reproductive organs, erectile tissue of external genitalia

Question 14

Where are presyn and postsyn cell bodies for sacral parasymp fibers?

Answer 14

presyn cell body – lateral horn spinal grey matter of sacral levels

postsyn cell body – some syn in hypogastric plexus but most near the pelvic effector organs themselves

Question 15

Generally describe parasymp sacral outflow from the spinal cord outwards.

Answer 15

> presyn cell bodies from lateral horns of S2, S3, S4
axons run in ventral roots, then ventral rami
then split to become pelvic splanchnic nerves
some syn in hypogastric plexus but most near the pelvic effector organs themselves

Question 16

“rest and digest”
most active when the body is at rest
“housekeeping”

Answer 16

parasympathetic division

Question 17

parasympathetic provides more ____ ____ on specific end organs

Answer 17

focused effect

Question 18

innervates organs in the head, neck, thorax, and most of the abdomen

Answer 18

cranial division

Question 19

supplies the rest of the abdominal organs and the pelvic organs

Answer 19

sacral divison

Question 20

where do presynaptic cell bodies lie for the parasympathetic system?

Answer 20

brainstem

Question 21

parasympathetic fibers stimulate secretion of many of the glands in the

Answer 21

head

Question 22

what glands are stimulated by the parasympathetic fibers of the head?

Answer 22

• sublingual
• submandibular
• lacrimal
• nasal gland

Question 23

postganglionic cell bodies are located in the ____ ____ and the walls of the heart

Answer 23

cardiac plexus