| A | B |
|---|
| neoplasm | new growth |
| atrial natriuretic peptide | a sodium-regulating |
| necrosis | tissue death |
| nephritis | inflammation of the kidney |
| neurophysiology | the physiology of the nervous system |
| nociceptors | receptors for pain |
| innominate | nameless |
| notochord | the embryonic structure that precedes the vertebral column |
| nucleus | the structure in a cell that controls cell activity |
| nutrition | the body's use of food for growth, development and health |
| obstruction | impeding or blocking up |
| monocular | pertaining to one eye |
| orthodontist | one who specializes in proper positioning of the teeth |
| olfactory nerves | responsible for smell |
| oliguria | small amount of urine |
| oncology | the study of cancer |
| oocyte | precursor of female gamete |
| ophthalmology | the study of eyes and related disease |
| orbicularis oculi | muscle that encircles the eye |
| cryptorchidism | failure of the testes to descend into the scrotoum |
| organism | an individual living thing |
| orthopedic | correction of deformities of the musculoskeletal system |
| osmosis | the spontaneous net movement of solvent molecules through a semi- permeable membrane into a region of higher solute concentration |
| anosmia | loss of sense of smell |
| osteodermia | bony formations in the skin |
| osteoporosis | bones become porous and brittle because of loss of calcium, phosphorus, and other minerals |
