Anatomy of Esophagus and Stomach Flashcards

(38 cards)

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?

18
Q

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

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?

25
Three organs which run posteriorly to the stomach...
pancreas, spleen, transverse colon
26
2 organs which run along anterior stomach...
left lobe of liber, diaphragm
27
Parasympathetic innervation of the stomach is derived from branches of...(2)
anterior and posterior vagal trunk
28
This nerve is derived from the esophageal plexus and formed by the left vagus n.
anterior vagal trunk
29
anterior vagal trunk innervates...(3)
liver, duodenum, anterior stomach
30
This nerve is derived from the esophageal plexus and formed by the right vagus n.
posterior vagal trunk
31
Sympathetic innervation of the stomach is composed of...
T6-T9 to Greater Splanchnic n. to Celiac ganglia
32
Lesser curvature blood supply... (2)
Right gastric a. | left gastric a.
33
Greater curvature blood supply (2)
right gastro-omental (gastroepiploic) left gastro-omental (gastroepiploic)
34
Fundus and body of stomach recieve blood from (2)
short gastric a. | posterior gastric a.
35
Lymph from stomach's upper 2/3 drain to...
``` gastric nodes pancreaticosplenic nodes (superior body) ```
36
lymph from the lower 1/3 of the stomach along the lesser curvature drains to the...
pyloric nodes
37
lymph from the lower 1/3 of the stomach along the greater curvature drains to the...
pancreaticoduodenal nodes
38
The lymph from the stomach ultimately drains to which group of lymph nodes?
celiac nodes