Systems Lecture

Question 1

Autonomic Nervous

Answer 1

Governs involuntary actions works with SNS to regulate body organs
SNS under voluntary control, ANS involuntary

Question 2

Two neuron chain in ANS

Answer 2

Preganglionic neuron: cell body in the brain or the spinal cord
Pregnaglionic axon: extends to the second cell body housed within an autonomic ganglion in the PNS
Postganglionic neuron: second neuron in pathway
Postganglionic axon: extends from cell body to targe cells

Question 3

Divisions of ANS

Answer 3

Parasympathetic- conservation of energy and replenishment of nutrient (rest and digest/fuck)
Sympathetic- preparation of body for emergencies (fight or flight)

Question 4

Parasympathetic Division

Answer 4

Preganglionic neurons located in brainstem nuclei (CN III: mid brain, CN VII pons/medulla, CN IX medulla, CN X medulla, and S2-S4 segments of spinal cord)
BRINGS BODY TO HOMEOSTASIS

Question 5

Sympathetic Division

Answer 5

Origin: Preganglionic Neurons located in lateral horns of T1-L2 segments of spinal cord

Question 6

Collateral Ganglia types

Answer 6

Esophageal: heart, esophagus, lungs
Celiac ganglia: heart, stomach, liver, pancreas, kidneys, spleen, gall baldder, lungs
Sup. mesenteric: small intestine
Inf. Mesenteric: large intestine
Hypogastric ganglia: reproductive organs, bladder

Question 7

Glands

Answer 7

Pancreas:
Adrenal glands
Seminal vesicle gland
Prostate glands
Bulbourethral gland:

Question 8

Neutotransmitters

Answer 8

All preganglionic axons release ACh
All post ganglionic parasympathetic release ACh
All post ganglionic sympathetic release NE except for sweat glands which are ACh