Autonomic Nervous System

Question 1

Autonomic nervous system

Answer 1

Visceral nervous system
Part of PNS

Question 2

Sympathetic

Answer 2

Fight or flight
T1-L2
Thoracolumbar
Long preganglionic (ACh) - Short postganglionic (ACh)

Question 3

Parasympathetic

Answer 3

Rest and digest
Cranial nerves #3,7,9,10 & S2-S4
Craniosacral
Short preganglionic (ACh) - Long postganglionic (NE)
Adrenal medulla doesn’t synapse, only pre
Sweat glands = parasympathetic but do ACh pre & post

Question 4

Penis

Answer 4

POINT - parasympathetic
SQUEEZE - sympathetic
SHOOT - somatic

Question 5

Ganglia

Answer 5

Prevertebral = splanchnic
Paravertebral = sympathetic chain - go to plexuses

Question 6

Paths of sympathetics

Answer 6

1. ascend & synapse ex. head
2. synapse @ level -
3. descend & synapse ex. lower limbs
4. pass w/o synapse - splanchnic, abdominal pelvic

Question 7

Somatic

Answer 7

Ventral root and dorsal root meet in rami and combine into spinal nerves

Question 8

Autonomic

Answer 8

Origin at lateral horn
Preganglionic enters white ramus communicans
Postganglionic exits gray ramus communicans

Question 9

Visceral nerves of thoracic

Answer 9

R vagus - r recurrent laryngeal - post vagal trunk
L vagus - l recurrent laryngeal - ant vagal trunk

Question 10

Cardiac plexus

Answer 10

P CNX,
S Pre = T1-T4/5 sympathetic chain

Question 11

Esophagus plexus

Answer 11

P CNX
S Pre = T2-T6 sympathetic chain

Question 12

Bronchi & lungs

Answer 12

P CNX
S Pre - T1/T4 sympathetic chain

Question 13

Foregut

Answer 13

P CNX
S Greater splanchnic - Celiac ganglion
Mouth - duodenum

Question 14

Midgut

Answer 14

P CNX
S Lesser splanchnic - SM ganglion
Jejenum - cecum

Question 15

Hindgut

Answer 15

P Pelvic splanchnic S2-S4
S Least splanchnic - IM ganglion
Colon - anus

Question 16

Fibers in head

Answer 16

All are postganglionic

Question 17

Preganglionic parasympathetic nuclei in brainstem

Answer 17

Pupillary dilation and respiratory and heart rates