Autonomics I and II

Question 1

What are the two divisions of the ANS?

Answer 1

1) Sympathetic

2) Parasympathetic

Question 2

Characteristics of the ANS?

Answer 2

• Involuntary divisions of the nervous system that consist of motor neurons (autonomic neurons) that conduct impulses to cardiac muscle, smooth muscle, and glands.
• It’s a two-neuron pathway: preganglionic neuron cell body is located in CNS and synapses with a ganglionic neuron in the PNS. A postganglionic fiber terminates on the effector organ.

Question 3

Parasympathetic

Answer 3

• Rest and Digest
• Placid
• Peaceful and calm
• It is 90% cranial nerves; origin is the head and lower spinal cord.
• 3, 7, 9 and 10 are parasympathetic!

Question 4

Sympathetic

Answer 4

• Four F’s: Fight, Flight, Feed, Find love
• Stress, irritability, afraid
• All jacked up
• Sympathetic nerves come from the thoracic region and come back up to the head via the sympathetic chain .