Question

Its muscles contract and relax to alter the size of its central hole or pupil. Which part of eye

Answer 1

$\huge\pink{ƛƝƧƜЄƦ♡}$

$\huge\green{ɪʀɪꜱ}$

ᴛʜᴇ ɪʀɪs ᴄᴏɴᴛʀᴏʟs ᴛʜᴇ ᴀᴍᴏᴜɴᴛ ᴏғ ʟɪɢʜᴛ ᴛʜᴀᴛ ᴇɴᴛᴇʀs ᴛʜᴇ ᴇʏᴇ ʙʏ ᴏᴘᴇɴɪɴɢ ᴀɴᴅ ᴄʟᴏsɪɴɢ ᴛʜᴇ ᴘᴜᴘɪʟ. ᴛʜᴇ ɪʀɪs ᴜsᴇs ᴍᴜsᴄʟᴇs ᴛᴏ ᴄʜᴀɴɢᴇ ᴛʜᴇ sɪᴢᴇ ᴏғ ᴛʜᴇ ᴘᴜᴘɪʟ. ᴛʜᴇsᴇ ᴍᴜsᴄʟᴇs ᴄᴀɴ ᴄᴏɴᴛʀᴏʟ ᴛʜᴇ ᴀᴍᴏᴜɴᴛ ᴏғ ʟɪɢʜᴛ ᴇɴᴛᴇʀɪɴɢ ᴛʜᴇ ᴇʏᴇ ʙʏ ᴍᴀᴋɪɴɢ ᴛʜᴇ ᴘᴜᴘɪʟ ʟᴀʀɢᴇʀ (ᴅɪʟᴀᴛᴇᴅ) ᴏʀ sᴍᴀʟʟᴇʀ (ᴄᴏɴsᴛʀɪᴄᴛᴇᴅ).

Answer 2

Answer:

iris control the size of pupil.

In dim light the pupil grows larger by iris