Question

what are epithelial tissue. define its types as well.

Answer 1

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Fᴏʀᴍs ᴛʜᴇ ᴏᴜᴛᴇʀᴍᴏsᴛ ᴄᴏᴠᴇʀɪɴɢ ᴏғ ᴛʜᴇ ʙᴏᴅʏ, ʙᴏᴅʏ ᴄᴀᴠɪᴛʏ, ᴀɴᴅ ɪɴᴛᴇʀɴᴀʟ ᴏʀɢᴀɴs. Iᴛ sᴇᴘᴀʀᴀᴛᴇs ᴅɪғғᴇʀᴇɴᴛ ᴏʀɢᴀɴ sʏsᴛᴇᴍs ɪɴ ᴛʜᴇ ʙᴏᴅʏ.

Cᴇʟʟs ᴀʀᴇ ᴀʀʀᴀɴɢᴇᴅ ᴀs ᴛɪɢʜᴛʟʏ- ᴘᴀᴄᴋᴇᴅ ᴄᴏɴᴛɪɴᴜᴏᴜs sʜᴇᴇᴛs, ᴡɪᴛʜᴏᴜᴛ ᴀɴʏ ɪɴᴛᴇʀᴄᴇʟʟᴜʟᴀʀ sᴘᴀᴄᴇ.

(i) Squamous and stratified squamous epithelium
(ii) Columnar and ciliated columnar epithelium

(iii) Cuboidal epithelium
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Answer 2

Epithelial tissues line the outer surfaces of organs and blood vessels throughout the body, as well as the inner surfaces of cavities in many internal organs. An example is the epidermis, the outermost layer of the skin. There are three principal shapes of epithelial cell: squamous, columnar, and cuboidal.