Gut Tube Flashcards

1
Q

Three divisions of pharynx in order

A

Nasopharynx, oropharynx, laryngopharynx

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2
Q

Where does the pharynx become continuous with the oesophagus?

A

At the lower border of the cricoid cartilage – C6

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3
Q

Where are the sites of constriction of the oesophagus?

A
  1. Boundary between pharynx and oesophagus
  2. Where the arch of aorta crosses the oesophagus
  3. Where the left main bronchus crosses the oesophagus
  4. At the oesophageal hiatus
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4
Q

Where does oesophagus pass the diaphragm at

A

T 10, right crus

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5
Q

Which structure would protect against reflux of food back into the airways?

A

Upper oesophageal sphincter

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6
Q

The 4 main regions of the stomach are:

A
  1. Cardia
  2. Fundus
  3. Body
  4. Pyloric part
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7
Q

Which specialised feature of the stomach lining increases its surface area and allows for expansion?

A

Gastric rugae/folds

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8
Q

Where is the foregut-midgut boundary

A

the foregut-midgut boundary is ½ along the 2nd part of the duodenum

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9
Q

Which part of duodenum is intra-peritoneal

A

The superior part (1st inch)

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10
Q

Which part of the pancreas touches which part of the spleen

A

Tail of pancreas touches hilum of spleen

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11
Q

What is the role of the ileocecal fold

A

Regulates passage of contents from ileum to cecum and acts as a sphincter preventing from cecum to ileum

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12
Q

What are the two small openings on the duodenum and what do they do

A

What are the names of these openings and what are they for?
Major duodenal papilla – opening for common bile duct and major pancreatic duct
Minor duodenal papilla – opening for accessory pancreatic duct

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13
Q

Where is the midgut/hindgut boundary

A

2/3 along the transverse colon

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14
Q

Which structures lie near the right colic flexure?

A
  • Right kidney (posterior)
  • Liver (anterior)
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15
Q

What structure lies near the left colic flexure

A

Spleen

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16
Q

Where does sigmoid colon run from to

A

Pelvic inlet to S3

17
Q

What forms the lateral flexures of the rectum

A

The transverse folds of internal rectal wall

18
Q

Cervical Levels of Celiac Trunk, SMA, IMA

A

T12, L1, L3

19
Q

What ate the major sites of anastomosis

A

Oesophageal vein with left gastric vein, paraumbilical vein with epigastric vein, superior rectal vein with inferior rectal vein q

20
Q

Which muscle type(s) form the muscularis externa layer of the oesophagus?

A

Upper 1/3 = skeletal; Middle 1/3 = skeletal/smooth; Lower 1/3 = smooth

21
Q

What kind of muscle does muscularis mucosa consist of

A

double layer of smooth muscle

22
Q

What does the lamina propria do

A

contains vasculature and loose connective tissue

23
Q

What is the role of submucosain oesophageus

A

contains oesophageal glands that secrete mucus

24
Q

What are the large circular folds on mucosal layer of SI

A

Plicae

25
Q

What do goblet cells secrete

A

mucin

26
Q

How does the LI differ from SI wrt mucosal layer

A

No villi present, deep crypts for absorption

27
Q

What is the predominant type of cell of surface epithelium of LI

A

Enterocytes and goblet cells

28
Q

What cell type are enterocytes

A

Tall columnar absorptive cells