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TAP Anatomy > Small Intestine > Flashcards

Small Intestine Flashcards

1
Q

How long is the duodenum

A

10 inches (25 cm) long

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2
Q

What type of peritoneum in the duodenum:

A

Mostly retroperitoneal. Except 1st part

1st part- intraperitoneal

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3
Q

How many parts of the duodenum

A

4

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4
Q

First part of the duodenum

A

duodenal bulb (cap)

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5
Q

duodenum first part hase a pyloric orifice to the:

A

Gall bladder

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6
Q

Where is the first part of the duodenum located?

A

Just to the right of L1

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7
Q

Transpyloric plane level of 1st part of the duodenum

A

L1

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8
Q

How long is the first part of the duodenum

A

2 inches (5cm)

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9
Q

Location of the second part of the duodenum

A

From the gall bladder to the lower border of L3

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10
Q

How long is the 2nd part of the duodenum

A

3 inches long

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11
Q

Vertebral level of the 2nd part of the duodenum

A

L2 and L3

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12
Q

Openings in the 2nd part of the duodenum

A

Major and minor duodenal papilla

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13
Q

Longest part of the duodenum

A

Third part (horizontal/inferior part)

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14
Q

How long is the 3rd part of the duodenum

A

3 inches (8 cm)

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15
Q

Location of 3rd level of duodenum

A

Level of L3

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16
Q

Length of 4th part of the duodenum

A

2 in (5cm)

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17
Q

Where does the 4th part of the duodenum end

A

Duodenojejunal flexure (junction)

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18
Q

Fibers holding the duodenojejunal flexure to the diaphragm- keeps small intestine from getting twisted up

A

Ligament of Treitz

19
Q

Is duodenal bulb smooth or tuberculated?

A

Smooth

20
Q

Major duodenal papilla

A

Opening to the hepatopancreatic ampula

21
Q

Minor duodenal papilla (DOES/DOES NOT) have a sphincter

A

Does not

22
Q

Plicae circularis

A

Circular folds in the duodenum?????? Double check on this

23
Q

Capillary beds in the duodenum are called the

A

Intestinal villi

24
Q

Duct that collects lipids in the duodenum

A

Lacteal duct

25
Q

Arterial supply to the duodenum

A

Upper half: Celiac trunk- supraduodenal artery and superior pancreaticoduodenal arter (anterior and posterior)

Lower half: Superior mesenteric artery: Inferior pancreaticoduodenal artery (ant and post)
First jejunal branch

26
Q

Length of jejunum and ileum

A

18-20 feet

27
Q

Location and length of jejunum

A

Proximal 8 feet

Lies in the left upper quadrant

28
Q

Location and length of ileum

A

Distal 12 feet

Lies in the right lower quadrant

29
Q

Properties of internal jejunum

A

Deeper red

Larger lumen

Thicker wall

Prominent plicae circulares

30
Q

External properties of jejunum

A

Less prominent arterial arcades

Longer vasa recta

Less mesenteric fat

31
Q

Atrial arcades

A

Arterial web-like network coming off of the artery towards the small intestine

32
Q

Vasa recta

A

Long finger-like arterials branching off of the arterial arcades, connecting to the small intestin

33
Q

Internal properties of the ileum

A

Pale pink

Smaller lumen

Thinner wall

Fewer plicae circulares

Peyer’s patches

34
Q

External ileum properties

A

More arterial arcades (more complex)

Shorter vasa recta

More mesenteric fat

35
Q

Peyer’s patches

A

Lymphoid tissue that fights large amounts of bacteria in undigested food, keeping it from entering the large intestine

36
Q

Arterial supply to the jejunoileum

A

Superior mesenteric arter

37
Q

Branches of the superior mesenteric artery that supply the small intestine (6)

A

Inferior pancreaticoduodenal artery

Jejunal arteries

Ileal arteries

Ileocolic arter

Right colic artery

Middle Colic artery

38
Q

Branches of the ileocolic artery

A

Ileal branches

Colic branches

Anterior Cecal branch

Posterior cecal branch

Appendicular branch

39
Q

A 2-layered fold of peritoneum that attaches part of the intestine to the posterior abdominal wall and allows blood vessels, nerves, and lymphatics to pass between these folds to the intestine

A

Mesentery

40
Q

Mesenteries (3)

A

Dorsal mesentary

Transverse mesocolon

Sigmoid mesecolon

41
Q

Mesentery that suspends the jejunoileum

Makes the greater omentum

A

Dorsal mesentary

42
Q

Connects the transverse colon to the posterior abdominal wall

A

Transverse mesocolon

43
Q

Attaches the sigmoid colon to the False pelvic cavity

A

Sigmoid mesocolon

TAP Anatomy (25 decks)

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