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Human Anatomy > Anatomy of Esophagus and Stomach > Flashcards

Anatomy of Esophagus and Stomach Flashcards

1
Q

2 muscular layers of esophagus…

A

internal circular

external longitudinal

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2
Q

Muscle fiber type in proximal 1/3 of esophagus

A

Skeletal muscle (voluntary control)

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3
Q

muscle fiber type in distal 1/3 of esophagus

A

smooth muscle (involuntary control)

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4
Q

the esophageal hiatus sits at the level of _____

A

T10

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5
Q

the esophageal hiatus sits just _______ of the midline

A

to the left

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6
Q

The point of transition/opening from esophagus to stomach is called the…

A

esophagogastric junction

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7
Q

The _____ sphincter encircles the cardial orifice…

A

cardiac

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8
Q

The cardial orifice sits to the left of midline at the _______ vertebra

A

T11

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9
Q

The EG junction is marked by a transition from ______ epithelium to _______.

A

Stratified squamous (esophagus) to simple columnar (stomach)

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10
Q

The circopharyngeus muscle forms the ________ sphincter

A

upper esophageal sphincter (cervical constriction)

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11
Q

This landmark delineates the pharyngoesophageal junction

A

UES/circopharyngeus

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12
Q

The thoracic constriction of the esophagus occurs where?

A

level of aortic arch and left main bronchus

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13
Q

The diaphragmatic constriction (aka LES) is formed by the …

A

diaphragm

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14
Q

4 parts of the stomach in order…

A

cardia, fundus, body, pyloric (antrum & canal)

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15
Q

The notch between the cardia and the more superior fundus is called the…

A

cardial notch (angle of his)

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16
Q

The pylorus is a thickened layer of what muscle type?

A

circular smooth muscle

17
Q

While supine, the pyloric part of the stomach is located at what spinal level?

A

L1

18
Q

When standing, the pylorus is located at what spinal level?

A

L2-L4

19
Q

Rugae of the stomach are most obvious where? (2)

A
  1. greater curvature

2. pylorus

20
Q

The deepest tissue layer of the stomach…

A

gastric mucosa

21
Q

The layer of tissue just superficial to the gastric mucosa (stomach) is called the…

A

muscularis externa

22
Q

3 layers of stomach’s muscularis externa from deep to superficial…

A

oblique, circular, longitudinal

23
Q

Describe the location of the lesser omentum…

A

lesser curvature and proximal duodenum to liver

24
Q

The greater omentum originates at the greater curvature of the stomach, and is composed of how many layers of peritoneum?

A

4 layers

25
Q

Three organs which run posteriorly to the stomach…

A

pancreas, spleen, transverse colon

26
Q

2 organs which run along anterior stomach…

A

left lobe of liber, diaphragm

27
Q

Parasympathetic innervation of the stomach is derived from branches of…(2)

A

anterior and posterior vagal trunk

28
Q

This nerve is derived from the esophageal plexus and formed by the left vagus n.

A

anterior vagal trunk

29
Q

anterior vagal trunk innervates…(3)

A

liver, duodenum, anterior stomach

30
Q

This nerve is derived from the esophageal plexus and formed by the right vagus n.

A

posterior vagal trunk

31
Q

Sympathetic innervation of the stomach is composed of…

A

T6-T9 to Greater Splanchnic n. to Celiac ganglia

32
Q

Lesser curvature blood supply… (2)

A

Right gastric a.

left gastric a.

33
Q

Greater curvature blood supply (2)

A

right gastro-omental (gastroepiploic)

left gastro-omental (gastroepiploic)

34
Q

Fundus and body of stomach recieve blood from (2)

A

short gastric a.

posterior gastric a.

35
Q

Lymph from stomach’s upper 2/3 drain to…

A 
gastric nodes
pancreaticosplenic nodes (superior body)
36
Q

lymph from the lower 1/3 of the stomach along the lesser curvature drains to the…

A

pyloric nodes

37
Q

lymph from the lower 1/3 of the stomach along the greater curvature drains to the…

A

pancreaticoduodenal nodes

38
Q

The lymph from the stomach ultimately drains to which group of lymph nodes?

A

celiac nodes

Human Anatomy (17 decks)

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