Question

A short note about the structure of villi

Answer 1

Answer:

Villi (singular is villus) are small, finger-like structures in the small intestine. They help to absorb digested food. Each villus has microvilli which increase the surface area of the intestinal walls. A larger surface area allows nutrients to be taken in more quickly.

Answer 2

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ᴡʀɪᴛᴇ sʜᴏʀᴛ ɴᴏᴛᴇs ᴏɴ ᴠɪʟʟɪ ᴀɴᴅ ᴛʜᴇɪʀ sɪɢɴɪғɪᴄᴀɴᴄᴇ.

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• ᴛʜᴇ ɪɴɴᴇʀ ᴡᴀʟʟ ᴏғ sᴍᴀʟʟ ɪɴᴛᴇsᴛɪɴᴇ ʜᴀᴠᴇ ᴛʜᴏᴜsᴀɴᴅs ᴏғ ᴏᴜᴛ ɢᴏɪɴɢ ᴘʀᴏᴊᴇᴄᴛɪᴏɴs ᴄᴀʟʟᴇᴅ ᴠɪʟʟɪ . ᴛʜᴇ ᴠɪʟʟɪ ɪɴᴄʀᴇᴀsᴇs ᴛʜᴇ sᴜʀғᴀᴄᴇ ᴀʀᴇᴀ ғᴏʀ ᴀʙsᴏʀᴘᴛɪᴏɴ. ᴛʜᴇ ᴠɪʟʟɪ ʜᴀs ɴᴇᴛᴡᴏʀᴋ ᴏғ ᴛʜɪɴ ᴀɴᴅ sᴍᴀʟʟ ᴠᴇssᴇʟs ᴄʟᴏsᴇ ᴛᴏ ɪᴛ's sᴜʀғᴀᴄᴇ.
• ᴛʜᴇ ᴠɪʟʟɪ ᴏғ ᴛʜᴇ sᴍᴀʟʟ ɪɴᴛᴇsᴛɪɴᴇ ᴘʀᴏᴊᴇᴄᴛ ɪɴᴛᴏ ᴛʜᴇ ɪɴᴛᴇsᴛɪɴᴀʟ ᴄᴀᴠɪᴛʏ, ɢʀᴇᴀᴛʟʏ ɪɴᴄʀᴇᴀsɪɴɢ ᴛʜᴇ sᴜʀғᴀᴄᴇ ᴀʀᴇᴀ ғᴏʀ ғᴏᴏᴅ ᴀʙsᴏʀᴘᴛɪᴏɴ ᴀɴᴅ ᴀᴅᴅɪɴɢ ᴅɪɢᴇsᴛɪᴠᴇ sᴇᴄʀᴇᴛɪᴏɴs.

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