Ach Nerves of Abdomen & Pelvis-Autonomics

Question 1

Sympathetic spinal cord segments

Answer 1

T1-L2

Question 2

Parasympathetic components?

Answer 2

Cranial nerves and S2-S4

Question 3

Where do most preganglionic parasympathetic fibers synapse?

Answer 3

NOT IN PREVERTEBRAL GANGLIA!

Usually they pass through the plexuses and then follow arteries to the wall of the gut where they synapse onto enteric ganglia!

Question 4

What landmark to vagal fibers supply organs proximal to?

Answer 4

Left colic flexure

Question 5

Ganglion associated with parotid gland

Answer 5

otic

Question 6

nerve going to parotid gland? Branch of?

Answer 6

Auriculotemporal nerve

CN IX

Question 7

Sensory anterior 2/3 of tongue ?

Pharyngeal arch?

Answer 7

V3

1

Question 8

Taste anterior 2/3 tongue?

Pharyngeal arch?

Answer 8

VII–>Chorda tympanii

2

Question 9

“other taste anterior”?

Pharyngeal arch?

Answer 9

CN IX

3

Question 10

Posterior 1/3 of tongue taste/sensation?

Arch?

Answer 10

CN IX

3

Question 11

Pharyngeal nerve of Vagus?

Answer 11

4

Question 12

Look at page 944 in Moore for lymphatic drainage from tongue –takes 4 routes

Answer 12

*

Question 13

Nerve that supplies pharyngeal constrictors?

Answer 13

CN X

Question 14

Nerve that supplies stylopharyngeus?

Answer 14

CN IX!! REMEMBER THIS!!! Because the other pharyngeus muscles are innervated by Vagus (salpingo- and palato-)

Question 15

Gag reflex afferent and efferent?

Answer 15

IX-afferent

X-efferent

Question 16

Where does a Zenkers diverticulum occur??

Answer 16

Between the 2 parts of the inferior pharyngeal constrictor muscle…the thyropharyngeal and cricopharyngeal muscles

Question 17

Parasympathetic innervation to upper 1/3 of esophagus

Answer 17

Recurrent laryngeal nerve

Question 18

Parasympathetic innervation to lower 1/3 of esophagus

Answer 18

Vagus nerve from esophageal plexus

Question 19

Sympathetic innervation upper 1/2 of esophagus

Answer 19

Middle cervical ganglion

Question 20

Sympathetic innervation lower 1/2 of esophagus

Answer 20

T1-T4 sympathetic ganglion

Question 21

Motor pathways in autonomic nervous system consist of what?

Answer 21

Preganglionic neuron in CNS and postganglionic neuron in peripheral ganglia

Question 22

Sensory pathways in autonomic NS consist of what?

Answer 22

SINGLE NEURONS

Cell bodies in sensory ganglia of certain cranial and spinal nerves

Question 23

Relationship between thoracic splanchnics and the sympathetic trunk?

Answer 23

They are preganglionic sympathetic fibers that PASS THROUGH sympathetic trunk WITHOUT SYNAPSING and travel to prevertebral ganglia

Question 24

Where do the greater and lesser splanchnic nerves synapse?

Answer 24

Celiac ganglion

Question 25

What do vagal fibers pass through??

Answer 25

Celiac plexus and Superior mesenteric plexus **THEY DO NOT GO TO THE INTERMESENTERIC OR INFERIOR MESENTERIC PLEXUSES! BECAUSE THEY SUPPLY FOREGUT AND MIDGUT

Question 26

Level of bifurfaction of aorta

Answer 26

L5

Question 27

What plexus lies at L5?

Answer 27

Superior hypogastric plexus

Question 28

Where do lumbar splanchnics L1 and L2 synapse?

Answer 28

Intermesenteric plexus

Question 29

Where do L2 and L4 sympathetic fibers synapse?

Answer 29

Superior hypogastric plexus