A cervix or collum is a neck, that is, a narrowed region of an object (such as a body or a body part). In anatomy, various body parts are called necks, predominantly:
Neck, the narrowed region of the body between the torso and the head Uterine cervix, usually just called the cervix when the context is implicit Further examples of body parts by that name are: Cervix vesicae urinariae, the neck of the urinary bladder Cervix cornus dorsalis medullae spinalis or cervix cornus posterioris medullae spinalis, the neck of the posterior grey column (the posterior horn of the spinal cord) Cervix dentis, the neck of a tooth (a slightly narrowed area where the crown meets the root, such as on a molar tooth) Cervix (insect anatomy), a membrane that separates the head from the thorax in insects
See also Neck (disambiguation) Collum (disambiguation)