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axis cylinder |
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cylinder /cyl·in·der/ (sil´in-der)
1. a solid body shaped like a column.cylin´drical 2. cylindrical lens. axis cylinder axon (1).
axis cylinder. See axon. axis pl. axes [L., Gr.] 1. a line through a center of a body, or about which a structure revolves. 2. the second cervical vertebra. celiac axis celiac trunk. axis cylinder axon. dorsoventral axis one passing from the back to the belly surface of the body. electrical axis of heart the resultant of the electromotive forces within the heart at any instant. See also mean electrical axis. external bulbar axis the optical axis that connects the anterior and posterior poles of the eyeball. Called also optic axis. frontal axis an imaginary line running from right to left through the center of the eyeball. axis of heart a line passing through the center of the base of the heart and the apex. optic axis see external bulbar axis (above). orbital axis a line passing through the apex of the bony orbit and the center of the opening of the orbit. sagittal axis an imaginary line extending through the anterior and posterior poles of the eye. visual axis an imaginary line passing from the midpoint of the visual field to the fovea centralis. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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