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air sac |
an air-filled space or cavity in a living organism, esp. any of the ends of certain bronchial tubes in a bird's body that connect with the larger body cavity and assist in breathing. |
alveolus |
a small cavity or pit, such as one of the terminal air sacs of the lungs or one cell of a honeycomb. [1/2 definitions] |
antrum |
a cavity within a bone, such as the pair of sinuses in the upper jaw that open into the nose. |
archenteron |
the primitive digestive cavity at the center of an embryo that is in the gastrula stage. |
aspirator |
a device that removes gas or fluids by suction, esp. one used to evacuate a body cavity. |
atrium |
in anatomy, any internal cavity, esp. one of the two upper heart chambers. [1/2 definitions] |
calyx |
in animals, a part or cavity shaped like a cup. [1/2 definitions] |
catheter |
a thin, flexible, hollow tube inserted into a body passage or cavity to drain fluid, esp. urine from the bladder. |
cecum |
a cavity opening at only one end, esp. the pouch at the head of the large intestine. |
celiac |
having to do with the abdomen or the abdominal cavity. [1/2 definitions] |
chamber |
a compartment or cavity. [1/5 definitions] |
cloaca |
the cavity into which the intestinal, urinary, and reproductive tracts open in birds, reptiles, fish, and amphibians. [1/3 definitions] |
coelenterate |
any of numerous invertebrate animals that have tentacles around the oral opening and a single internal cavity for various bodily functions, such as the jellyfishes, anemones, and corals. |
coelom |
the main body cavity of the higher animals, which contains the viscera. |
constrictor |
a muscle that constricts a cavity of the body or compresses an organ. [1/3 definitions] |
curette |
a surgical instrument shaped like a scoop or loop and used for scraping a cavity of the body, esp. the uterus, in order to remove dead or unwanted tissue. [2 definitions] |
-cyst |
sac; cavity; vesicle; bladder. |
decompression |
the relieving of excess pressure, as in a body cavity, by surgery. [1/2 definitions] |
dilatation |
in medicine, the state or condition of abnormal enlargement of an organ, cavity, or canal of the body. |
dilator |
a medical instrument that dilates a body part, such as a cavity or orifice. [1/2 definitions] |
diverticulum |
a tubular pouch or sac that branches out from a body canal, organ, or cavity, occurring as a normal or abnormal growth. |
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