6.1 Structure of the wall of the small intestine

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What is the outer coat of the small intestine called?
Serosa
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What kind of muscle layers does the small intestine have?
Longitudinal muscle and inside it circular muscle
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What is the sub-mucosa?
A tissue layer containing blood and lymph vessels
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What is the mucosa?
The mucosa is the lining of the small intestine, with epithelium that absorbs nutrients on the inner surface
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Describe peristalsis:
The contraction of the circular and longitudinal muscles of the small intestine which mix the food with enzymes and moves it along the gut.
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What is peristalsis controlled by?
Peristalsis is controlled unconsciously by the enteric nervous system.
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In what direction does peristalsis occur?
Only away from the mouth.
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Card 2

Front

What kind of muscle layers does the small intestine have?

Back

Longitudinal muscle and inside it circular muscle

Card 3

Front

What is the sub-mucosa?

Back

Preview of the front of card 3

Card 4

Front

What is the mucosa?

Back

Preview of the front of card 4

Card 5

Front

Describe peristalsis:

Back

Preview of the front of card 5
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