Lecture 18: Nervous System

Question 1

Where does the sympathetic spinal cord originate?

Answer 1

T1-L2

Question 2

Where does the parasympathetic spinal cord originate?

Answer 2

CN’s 3, 7, 9, 10, S2-S4

Question 3

Describe the preganglionic neuron

Answer 3

always myelinated
synapses with postganglionic neuron
utilizes acetylcholine

Question 4

Describe the postganglionic neuron

Answer 4

originates from ganglion
nerver myelinated
generally utilizes norepinephrine

Question 5

The preganglionic sympathetic supply to the thoracic viscera are from _______

Answer 5

T1-T5

Question 6

What are the functions of the cardiopulmonary splanchnic nerves

Answer 6

coronary artery dilation
increase heart rate
bronchodilation

Question 7

Splanchnic nerves are composed of what?

Answer 7

preganglionic fibers and visceral sensory fibers

Question 8

What do splanchnic nerves supply?

Answer 8

abdominal viscera

Question 9

What vertebral levels is the greater splanchnic nerve and where does it synapse?

Answer 9

T5-T9

synapses in celiac ganglion

Question 10

What vertebral levels is the lesser splanchnic nerve and where does it synapse?

Answer 10

T10-T11

synapses in the superior mesenteric ganglion

Question 11

What vertebral levels is the least splanchnic nerve and where does it synapse?

Answer 11

T12

synapses in the aorticorenal ganglion

Question 12

The vagus nerve is major parasympathetic supply to what?

Answer 12

thoracic and abdominal viscera