Autonomic Nervous System

Question 1

Horner’s Syndrome is a defect in what division of the nervous system

Answer 1

sympathetic / autonomic nervous system

Question 2

Innervate smooth/cardiac muscle, blood vessels, glands, and internal organs. Largely unconscious action

Answer 2

visceral motor (parasympathetic and sympathetic efferents)

Question 3

Sensory neurons that innervate internal organs, blood vessels; only provide imprecise localization of sensation and dull sense of pressure, pain, etc.

Answer 3

visceral sensory (afferents)

Question 4

Ganglia for sympathetic neurons close to vertebrae or target organ

Answer 4

close to vertebrae

Question 5

Ganglia for parasympathetic neurons close to vertebrae or target organ

Answer 5

close to target organ

Question 6

Autonomic divergence

Answer 6

One preganglionic neuron can feed multiple postganglionic neurons

Question 7

Innervation of sweat glands

Answer 7

only by sympathetics

Question 8

Sympathetic ganglion in which T1-2 ascend into the head

Answer 8

Superior Cervical Ganglion

Question 9

Post-ganglionic sympathetic fibers join what plexus in the head

Answer 9

Internal Carotid Plexus

Question 10

Damage to sympathetic pathways to head

Answer 10

Horner’s Syndrome

Question 11

Symptoms of Horner’s Syndrome

Answer 11

1) miosis - pupillary constriction
2) ptosis - drooping eyelid
3) anhydrosis - lack of sweating

Question 12

Smooth muscle responsible for raising eyelid

Answer 12

Levator palpebrae superioris (parts of it)

Question 13

Radial smooth muscle, innervated by sympathetics, responsible for changes to iris diameter

Answer 13

Dilator Pupil Muscle