(7) Autonomic Nervous System

Question 1

NTs for sympathetic pre and post gang

Answer 1

Pre: Ach
Post: NE (except sweat glands and errector pili which use Ach)

Question 2

NTs for parasympathetic pre and post gang

Answer 2

Pre and post use Ach

Question 3

Where does sympathetic outflow originate from (pre-gang)

Answer 3

lateral horn of T1-L2 vertebrae

Question 4

sensory info centrally reaches the ANS via

Answer 4

nucleus of the solitary tract

Question 5

ANS outflow is centrally regulated by

Answer 5

amygdala and hypothalamus

Question 6

pre-and post-gang parasympathetic cell bodies that control pupillary constriction are found… and travel via…

Answer 6

pre: midbrain at edinger-westphal nucleus
post: optic ganglion
travel via CN III

Question 7

pre-and post-gang parasympathetic cell bodies that control lacrimation constriction are found… and travel via… to target….

Answer 7

pre: upper medulla at superior and inferior salivary nuclei
post: pterygopalatine ganglion
travel via CN VII to lacrimal gland

Question 8

pre-and post-gang parasympathetic cell bodies that control salivation constriction are found… and travel via… to target…

Answer 8

pre: upper medulla at superior and inferior salivary nuclei
post: otic ganglion
travel via CN IX to parotid

post: submandibular ganglion
travel via CN VII to submandibular

Question 9

pre-and post-gang parasympathetic cell bodies that control ANS in thoracic and abdominal viscera constriction are found… and travel via…

Answer 9

pre: dorsal motor nucleus of the vagus and nucleus ambigus
post: preaortic ganglion
travel via CN X

Question 10

pre-and post-gang parasympathetic cell bodies that control ANS in descending colon and pelvic viscera constriction are found… and travel via…

Answer 10

pre: lateral horn S2-S4
post: various pelvic ganglion
via pelvic splanchnic nerves

Question 11

afferent pathway for baro and chemo receptors

Answer 11

CN IX and X → nucleus solitarius → interneurons → nucleus ambiguus, dorsal motor nucleus of vagus, and midbrain

Question 12

describe the innervation pathway that senses pain/temp in the bladder

Answer 12

bladder mucosa → (via symp and para) spinal cord → (via spinothalamic tract) to thalamus → cortex

Question 13

age that you acquire bladder control

Answer 13

3

Question 14

what systems control sexual responses

Answer 14

neuroendocrine, limbic, autonomic, and somatic

Question 15

N and spinal cord segements that carry motor and sensory info from/to perineum

Answer 15

pudental N (S2-S4)

Question 16

controls erection

Answer 16

parasymp (S2-S4) via pudental N

release of sympathetic inhibition

Question 17

controls ejaculation

Answer 17

sympathetic (T12-L1)

Question 18

controls expulsion of sperm

Answer 18

parasympathetics (S2-S4)

Question 19

triggers orgasm

Answer 19

sensory input, cortical arousal, NT release

Question 20

horners syndrome presents as… and is due to …

Answer 20

ptosis (droppy eyelid) and meiosis (small pupil) on ipsilateral lesion

KO symp fibers from hypotal to ciliary nerve

Question 21

how would you tell if a lesion to sympathetic fibers was centrally placed (brainstem or spinal cord) ot peripherialy placed

Answer 21

central: anhidrosis on entire ipsilateral side of body
peripheral: loss of sweating only in region