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okapi
(Encyclopedia)okapi ōkăpˈē [key], nocturnal ruminant mammal, Okapia johnstoni, of the giraffe family. It inhabits the almost sunless rain forests of the upper Congo and feeds on leaves. Its shape is reminiscent...Eustachian tube
(Encyclopedia)Eustachian tube yo͞ostāˈshən [key] [for Bartolomeo Eustachi], a hollow structure of bone and cartilage extending from the middle ear to the rear of the throat, or pharynx, technically known as the...nose
(Encyclopedia)nose, olfactory and respiratory organ, located between the eyes. The external nose, composed of bone and cartilage, is the most prominent feature of the face in humans. The internal nose is a hollow s...trachea
(Encyclopedia)trachea trāˈkēə [key] or windpipe, principal tube that carries air to and from the lungs. It is about 41⁄2 in. (11.4 cm) long and about 3⁄4 in. (1.9 cm) in diameter in the adult. It extends fr...bonefish
(Encyclopedia)bonefish, common name for a fish belonging to several species in the two genera of the family Albulidae. Albula vulpes, the bonefish, is widespread in warm, shallow marine waters; it is the only bonef...rickets
(Encyclopedia)rickets or rachitis rəkīˈtĭs [key], bone disease caused by a deficiency of vitamin D or calcium. Essential in regulating calcium and phosphorus absorption by the body, vitamin D can be formed in t...chimaera
(Encyclopedia)chimaera kĭmērˈə [key], cartilaginous marine fish, related to the sharks. Also called ratfishes, chimaeras are found in temperate oceans throughout the world, mostly in deep water. They have large...osteopathy
(Encyclopedia)osteopathy ŏstēŏpˈəthē [key], practice of therapy based on manipulation of bones and muscles. This school of medicine, founded by A. T. Still in 1874, maintains that the normal body produces for...hagfish
(Encyclopedia)hagfish, primitive, jawless marine fish of the family Myxinidae, of worldwide distribution in cold and temperate waters. Its rudimentary skeleton, of cartilage rather than bone, has a braincase, but n...giraffe
(Encyclopedia)giraffe, African ruminant mammal, genus Giraffa, living in open savanna S of the Sahara. Giraffes have historically been considered to be one species, G. camelopardalis, with a number of subspecies, b...Browse by Subject
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