small intestine Flashcards by Olivia Torres | Brainscape

Q

how long is the small intestine

A

21 feet

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Q

describe the structure of the small intestine

A

narrow tubing from pyloric sphincter to ileocecal valve (large intestine)

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Q

common name for large intestine

A

colon

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Q

what is the ileocecal valve

A

beginning of LI, end of SI

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Q

can you live with out a small intestine

A

no

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Q

function of small intestine

A

absorption (most important organ). sponge

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Q

how long is food in the small intestine

A

10-12 hours; 18 hrs start to finish

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Q

duodenum

A

10 in connects to stomach. (small intestine)

beginning

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Q

jejunum

A

8feet. middle of SI

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Q

illeum

A

12 feet. connects to large intestine. end of SI

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Q

realtionship with SI size and weight

A

SI size down, weight down

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Q

description of villi

A

projections w/ brush border

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Q

what surrounds villi

A

capillaries

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Q

what do capillaries aid in

A

diffusion

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Q

lacteals

A

transport fat (villi)

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Q

shape of villi

A

circular folds called plicae circulares

Q

function of plicae circulares

A

increase surface area

Q

Peyers patches

A

lymphatic tissue (turnover of tissue)

Q

when do Peyers Patches turnover

A

every 3-6 days

Q

goblet cells

A

release mucus

Q

what do villi release

A

sucrase, maltase, lactase, goblet cells