Midgut Flashcards

1
Q

What is the biliary system?

A

Organs and ducts which create, store and release bile into descending portion of duodenum

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2
Q

Give an account of the ducts in the biliary system

A
  1. Left and right hepatic ducts form common hepatic duct
  2. Common hepatic duct and cystic duct form common bile duct
  3. Common bile duct joins pancreatic duct to enter duodenum through ampulla of Vater
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3
Q

Where does bile originate?

A

Hepatocytes

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4
Q

Where is bile stored?

A

Gallbladder

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5
Q

What is the function of bile salts?

A

Emulsify fats and facilitate intestinal absorption

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6
Q

What is the function of the sphincters in the common bile duct and main pancreatic duct?

A

Ensure bile only flows in 1 direction

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7
Q

Where does the superior mesenteric artery supply?

A

Small intestine and first 2/3 of large intestine

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8
Q

What are 5 main arteries given by the superior mesenteric artery?

A
  1. Middle colic
  2. Right colic
  3. Ileocolic
  4. Jejunal
  5. Ileal
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9
Q

What supplies blood to duodenum?

A

Superior and inferior pancreaticoduodenal arteries

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10
Q

What supplies blood to jejunum?

A

Jejunal arteries

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11
Q

What supplies blood to ileum?

A

Ileal arteries

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12
Q

What supplies blood to caecum?

A

Ileocolic artery

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13
Q

What supplies blood to appendix?

A

Appendicular artery from ileocolic artery

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14
Q

What supplies blood to sigmoid colon?

A

Sigmoid arteries

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15
Q

What supplies blood to rectum?

A

Superior rectal artery

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16
Q

What supplies blood to ascending/transverse/descending colon?

A

Right/Middle/Left colic arteries respectively

17
Q

What are 4 ways to differentiate between large intestine and small intestine?

A
  1. Teniae coli
  2. Haustra
  3. Epiploic appendices
  4. Larger diameter
18
Q

What are 4 ways to differentiate between ileum and jejunum?

A
  1. More complex arterial arcades
  2. Shorter vasa recta
  3. Less plicae circulares
  4. Fat present in mesentery is massive
19
Q

What connects ileum and caecum?

A

Ileocecal valve inside ileocecal orifice

20
Q

Where is the base of the appendix situated?

A

Between ileocecal valve and apex of caecum

21
Q

What are 5 positions the tip of the appendix can be in?

A
  1. Ascending behind caecum
  2. Inferior to caecum
  3. Transverse behind caecum
  4. Anterior to ileum
  5. Posterior to ileum
22
Q

What is the teniae coli?

A

Longitudinal smooth muscle on large intestine

23
Q

What are haustra?

A

Sacculations found on large intestine

24
Q

What are epiploic appendices?

A

Small bags of fat filled peritoneum found on large intestine