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Flashcards in Exam 3 Nerves Deck (68)
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What is the innervation to the anterior abdominal wall?

Lower 6 thoracic nerves

1

What is the innervervation of the external oblique muscle?

Anterior primary rami of lower 6 thoracic nerves

2

What is the innervation of the internal oblique muscle?

Anterior primary rami of lower 6 thoracic and first lumbar nerves

3

Innervation of transversus abdominis?

Anterior primary rami of lower 6 thoracic and first lumbar nerves

4

Innervation of rectus abdominis muscle?

Anterior primary rami of the lower 6 thoracic nerves

5

Innervation of pyramidalis muscle?

Subcostal nerve

6

What nerves are enclosed by the rectus sheath?

Anterior primary rami of the lower 6 thoracic nerves

7

What nerve transmits through the inguinal canal?

ilioinguinal nerve

8

Innervation of cremaster muscle?

Genital branch of genitofemoral nerve (L1,L2)

9

What are the two branches of the ilioinguinal nerve?

Femoral branch and anterior scrotal/anterior labial nerve

10

What does the femoral branch of the ilioinguinal nerve supply?

Suppliers the upper medial part of the thigh

11

What does the anterior scrotal/anterior labial nerve supply?

Anterior scrotal: root of penis and anterior part of scrotum
Anterior labial: mons pubis and anterior part of labia majora

12

The parietal peritoneum is supplied by what nerves?

1) phrenic nerve
2) ilioinguinal
3) iliohypogastric
4) intercostal
5) subcostal
P
Ilio
Ilio
Costal
Costal

13

The parietal peritoneum is very sensitive to what?

Pain

14

What nerves supply the visceral peritoneum?

Autonomic nerves

15

What is the sympathetic innervation of the foregut?

Greater splanchnic nerves (T5-T9)
Lesser splanchnic nerves (T10-T11)

16

What is the sympathetic division of the midgut?

Greater splanchnic nerves (T5-T9)
Lesser splanchnic nerves (T10-T11)

17

What is the sympathetic innervation of the hindgut?

Lumbar splanchnic nerves (L1-L2)

18

What is the parasympathetic innervation of the foregut?

Vagus nerve

19

What is the parasympathetic innervation of the midgut?

Vagus nerve

20

What is the parasympathetic innervation of the hindgut?

Pelvic splanchnic nerves (S2-S4)

21

What effects are produced from the sympathetic activation of the gastrointestinal tract?

Decreases motility and tone and contracts sphincters

22

What are the effects of parasympathetic activation of the gastrointestinal tract?

Increase motility and tone, and relaxes sphincters

23

Which nervous system activation of the gastrointestinal tract contracts sphincters and decreases motility?

Sympathetic nervous system

24

What is the enteric nervous system?

It is a regional nervous system of nerves specific to the gut. It is semi independent of the CNS

25

Where is the submucosal plexus?

Within the submucosa near border with muscularis externa

26

Postganglionic fibers from the submucosal plexus supply what?

Supplies muscularis mucosae and mucus secreting glands

27

Where is the myenteric plexus?

Between circular and longitudinal layers of muscularis externa

28

Postganglionic fibers of the myenteric plexus supply what?

The circular and longitudinal smooth muscle layers of muscularis externa and stimulate peristalsis

29

The submucosal plexus and myenteric plexus are part of what nervous system?

Enteric nervous system