The Midgut and Hindgut Flashcards

1
Q
A
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2
Q
A
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3
Q

What are the colours of the jejunum and ileum?

A

Jejum- Deeper red

Ileum- Paler pink

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4
Q

What are the walls of the jejunum and ileum like?

A

Jejunum- Thick and heavy

Ileum- Thin and light

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5
Q

WHat is the vascularity like?

A

Jejunum- Greater

Ileum- Less

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6
Q

What are the vasa recta of the jejunum and ileum like?

A

Jjeunum- Long

Ileum- Short

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7
Q

What are the arcades of the jejunum and ileum like?

A

Jejunum- A few large loops

Ileum- Many short loops

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8
Q

What os the fat in the jejunuma nd illeum like?

A

Jjeunum- Less

Ileum- More

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9
Q

What are the circular folds of the jejunum like?

A

Large, tall and closely pakced

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10
Q

What are the circular folds of the jejunum and ileum like?

A

Jejunum- Large, tall and closely packed

Ileum- Large valvular flaps

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11
Q

WHat are the lymphoid tissue in the jejunum and ileum?

A

Jejunum- Small amounts

Ileum- Numerous Peyer’s patch

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12
Q

Which major blood vessel supplies the jejunum and ileum?

A

Superior mesenteric artery

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13
Q

Where do the veins surrounding the jejunum and ileum drain to?

A

Portal venous system

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14
Q

Which set of lymph nodes does lymph drain to from here?

A

Superior mesenteric lymph nodes

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15
Q

Which part of the autonomic nervous system (sympathetic or parasympathetic) stimulations reduces the secretion and motility of the intestine and also acts as vasoconstrictor?

A

Parasympathetic

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16
Q

What does the nerve supply come from?

A

From the superior mesenteric plexus therefore pain generally goes to the umbilical region.

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17
Q

The large intestine can be distinguished from the small intestine by 3 features?

A

Taeni coli

Omental apices

Haustura

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18
Q
A
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19
Q

How is the large intestine peritonised?

A

Caecum Intraperitoneal

Ascending Colon Retroperitoneal

Transverse Colon Intraperitoneal

Descending Colon Reteroperitoneal

Sigmoid Colon Intraperitoneal

20
Q
A
21
Q

Which of the 9 abdominal region is the caecum and appendix located?

A

Right inguinal region

22
Q

What two structures open into the caecum?

A

Ileum and appendix

23
Q

What is Mcurbey’s point and why is it clinically useful?

A

Name given to the point over the right side of the abdomen that is one-third of the distance from the anterior superior iliac spine to the umbilicus. Most common location of the base of the appendix where it is attached to the cecum. Pain over this point is found in 91% of patients with an inflamed appendix

24
Q

What are the artieral supply of the ascending colon?

A

Superior mesenteric artery, the ileocolic and right colic arteries

25
Q

What are the artieral supply of the transverse colon?

A

Superior mesenteric artery and Inferior mesenteric artery

26
Q

What is the arterial supply of the descending colon?

A

Inferior mesenteric artery- left colic artery

27
Q

What is the arterial supply of the sigmoid colon?

A

IMA

28
Q

What is the venous drainage of the ascending colon?

A

Ileocolic and right colic veins which emoty into superior mesenteric vein

Drain into portal venous system

29
Q

What is the venous drainage of the transverse colon?

A

Middle colic vein empties into superior mesenteric vein

Drains into portal

30
Q

What is the venous drainage of the descending colon?

A

Left colic vein which drains into the inferior mesenteric vein

Drains into portal venous system

31
Q

What is the venous drainage of the sigmoid colon?

A

Sigmoid veins into the inferior mesenteric vein

Drains into portal venous system

32
Q

What is the peritonisation of the ascending colon?

A

Retroperiotneal

33
Q

Peritonisation of transverse colon?

A

Intraperitoneal

34
Q

Peritonisation of descending colon?

A

Retroperiotneal

35
Q

Peritonisation of sigmoid colon?

A

Intraperitoneal

36
Q

What is the arterial supply of the superior 1/3 od the rectum?

A

Superior rectal artery

37
Q

What is the arterial supply of the middle 1/3 od the rectum?

A

Middle rectal artery

38
Q

What is the arterial supply of the ifnerior 1/3 of the arterial supply?

A

Inferior rectal artery

39
Q

What is the venous drainage of the superior 1/3, middle 1/3 and inferior 1/3?

A

Superior- Superior rectal vein into portal venous system

Middle- Middle rectal vein into systemic system

Inferior- Inferior rectal vein into the systemic system

40
Q

What is the lymph drainage of the superior, middle and inferior 1/3?

A

Superior- Inferior mesenteric nodes

Middle- Internal iliac nodes

Inferior- Superficial inguinal nodes

41
Q

What is the periotnisation of the superior, middle and inferior 1/3?

A

Superior- Retroperitonisation

Middle- Retroperitoneal

Inferior- Subperitoneal

42
Q

What is the role of the pelvic floor in maintaining faecal continence?

A

Muscles of the pelvic floor support your rectum and the urinary bladder. Work with internal anal sphincter to maintain continence

43
Q

What other structures are involved in faecal continence?

A

External anal sphincter and internal anal sphincter

44
Q

What is the pectinate line?

A

Line which divides the upper two thirds and lower third of the anal canal

45
Q

What si the arterial supply, venous drainage and lymphatic drainage of these parts of the gut tube?

A