ANS: Parasympathetic

Question 1

preganglionic parasympathetic neurons originate in…

Answer 1

• CN III, VII, IX, X (75% vagus)
• Sacral plexus (S2, S3, S4)

Question 2

pupil constriction is innervated by ___

Answer 2

CN III

Question 3

submandibular and sublingual salivary glands are innervated by ____

Answer 3

CN VII

Question 4

parotid salivary glands are innervated by ____

Answer 4

CN IX

Question 5

all organs up to splenic flexure are innervated by ____

Answer 5

CN X

Question 6

descending colon down and all organs of the perineum are innervated by ____

Answer 6

S2-S4 (sacral plexus)

Question 7

NT and receptor of preganglionic parasympathetic neurons

Answer 7

Ach
nicotinic

Question 8

NT and receptor of postganglionic parasympathetic neurons

Answer 8

Ach
muscarinic

Question 9

parasympathetic function in eye

Answer 9

pupillary constriction & lens accommodation

Question 10

parasympathetic function in glands

Answer 10

stimulate nasal, lacrimal, salivary & GI glands

Question 11

parasympathetic function in GI tract

Answer 11

stimulates overall activity, including GI smooth muscle

Question 12

parasympathetic function in heart

Answer 12

decrease HR

Question 13

parasympathetic function in blood vessels

Answer 13

none: only sympathetic

Question 14

parasympathetic function in lungs

Answer 14

mild-moderate constriction (CN X)

Question 15

nasal, lacrimal, salivary and GI glands are stimulated by what neurotransmitter?

Answer 15

Ach