Villi aid absorption through their large surface area, microvilli that further increase surface area, a rich blood supply for transport, a lacteal for fat absorption, and smooth muscle that facilitates contact with digested products.
Villi aid absorption through their large surface area, microvilli that further increase surface area, a rich blood supply for transport, a lacteal for fat absorption, and smooth muscle that facilitates contact with digested products.
| Front | Explain how the structure of a villus aids absorption of the products of digestion ( 3 marks) |
|---|---|
| Back | large surface area for greater absorption; possess microvilli which further increase surface area; rich supply of blood capillaries to transport absorbed products away; contains lacteal/lymph duct for fat absorption; contains smooth muscle/can contract/wave to come into contact with products; |
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