body cavity(redirected from Acoelomata)
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the collective visceral cavity of the trunk (thoracic cavity plus abdominopelvic cavity), bounded by the superior thoracic aperture above, the pelvic floor below, and the body walls (parietes) in between.
1. See coelom.
2. Any of the cavities of the body that adjoin external orifices, such as the mouth or rectum.
body cavityAny space in the body that does not freely communicate with the outside. Body cavities are covered with specialised lining cells—e.g., mesothelial cells in the pericardium, peritoneum and pleura.
Body cavity types
• Major—Pericardial, pleural, peritoneal, cerebrospinal.
• Minor—Amniotic, anterior chamber of the eye, cul de sac, hydrocele, oral cavity, synovial, vitreous.
bod·y cav·i·ty(bod'ē kav'i-tē)
1. Any hollow space within the body. See: illustration
2. A hidden body space that is accessible from the outside, e.g., rectum or vagina. Referred to in “body cavity search for contraband”.
3. Derivatives of the coelom, i.e., the pericardial, peritoneal, and plural sacs. See: coelom
See also: cavity