pharynx to part 2 of the duodenum
The skeletal system is mainly responsible for bone structure. Bone cells will constitute the structure of the bone with osteoblasts facilitating the formation of bones.
cervical
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lumen
The axis is the medical term meaning the longitudinal or long portion of a structure. The Axis of the uterus points up and down (cephalocaudally).
the lumen
The mantle is the thickest layer of the Earth.
A corportion is a company structure in British Italy similar to a corporation, but without all the bells and whistles, only a portion, so the name corp-portion or corportion.
Hair root
The aqueous humor is the colorless transparent fluid portion of the eye.
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Pineal Gland