Predominant Autonomic Tone

Question 1

Arterioles

Answer 1

Predominant tone: S (adrenergic); blockade effect: vasodilation–> hypotension

Question 2

veins

Answer 2

Predominant tone: S (adrenergic); blockade effect: dilatation–> decreased venous return, decreased CO

Question 3

heart

Answer 3

Predominant tone: PS (cholinergic); blockade effect: tachycardia

Question 4

Iris

Answer 4

Predominant tone: PS (cholinergic); blockade effect: mydriasis (pupillary dilatation)

Question 5

ciliary muscle

Answer 5

Predominant tone: PS (cholinergic); blockade effect:cycloplegia (paralysis of ciliary musc)

Question 6

GI tract

Answer 6

Predominant tone: PS (cholinergic); blockade effect: atony and reduced motility; constipation

Question 7

Urinary bladder

Answer 7

Predominant tone: PS (cholinergic); blockade effect: urinary retention

Question 8

salivary glands

Answer 8

Predominant tone: PS (cholinergic); blockade effect: xerostomia

Question 9

sweat glands

Answer 9

Predominant tone: S (cholinergic); blockade effect: anhidrosis