Misc Deck

Question 1

Which spinal levels do the sympathetic preganglionic neurons run?

Answer 1

T1 - L3

Also known as the thoracolumbar ganglia.

Question 2

Which spinal levels do the parasympathetic preganglionic neurons run?

Answer 2

S2-S4 and the cranial nerves.

Known as the craniosacral plexus.

Question 3

Where can chromafin cells be found and what function do they have?

Answer 3

These are found in the adrenal medulla, the sympathetic nervous system synapse directly on these cells and release epinephrine and norepinephrine.

Question 4

What neurotransmitter is released in both sympathetic and parasympathetic ganglion?

Answer 4

ACh

from nicotinic receptor types in the ganlgion.

Question 5

What nerurotransmitters are released on the effector organs of both parasympathetics and sympathetics?

Answer 5

Sympathetics release norepinephrine except for sweat glands that work off ACh.

Parasympathetics and somatics use ACh.

Question 6

What are the receptor types for sympathetics, parasympathetics, and somatic nerves?

Answer 6

Sympathetics utilize Alpha 1,2 Beta 1,2 receptors.

Parasympathetics use muscarinic receptors.

Somatic use nicotinic receptors.

Question 7

How does the Gi protein work in the heart?

Answer 7

Gi leads to inhibition of adenylate cyclase and opening of the K+ channels. This leads to a slowing of the spontaneous phase 4 depolarization slowing the heart rate.