
	3D Medical Animations Close This information is provided by an independent source. Merck & Co. does not endorse and is not responsible for the accuracy of the content, or for the practices or standards of non-Merck sources. This information provided is not intended to be a substitute for professional medical advice. A licensed healthcare professional should be consulted for diagnosis and treatment of any and all medical conditions. The manufacturer of a product generally has the most complete information about that product. How to use How to use The world's largest library of 3D medical animations developed and copyrighted by Blausen Medical Communications. The Human Atlas figures rotating model, labeled slides, and printable text in addition to animated videos. Shows a video of the selected health topic. Controls play, pause, and restart of the video. Shows a summary of the selected health topic. Controls to scroll the text. Shows a 3 D model of the video. Controls to rotate the model. Shows slides from the video. Controls to change slides.

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segment (seg´mәnt) a demarcated portion of a whole. adj., segmen´tal., adj.

behavior segment the smallest descriptive unit of a response to a stimulus.

bronchopulmonary segments the smaller subdivisions of the lobe of a lung; each segment is separated from others by a connective tissue septum and supplied by its own branch of the bronchus leading to the particular lobe.

renal segments subdivisions of the kidney that have independent blood supply from branches of the renal artery, including the superior, anterior superior, inferior, anterior inferior, and posterior segments.

spinal segments , segments of spinal cord small sections of the spinal cord, to each of which is attached anterior and posterior roots of one of the 31 pairs of spinal nerves; there are 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and one or more coccygeal segments.

Segments of the spinal cord, comprising 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 or more coccygeal segments; shown relative to the vertebrae.

Segments of the spinal cord, comprising 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 or more coccygeal segments; shown relative to the vertebrae.

uterine segment either of the two portions into which the uterus becomes differentiated early in labor; the upper contractile portion (corpus uteri) becomes thicker as labor approaches, and the lower noncontractile portion (the isthmus) is thin walled and passive in character.

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