433 left upper and left lower heart chambers. Closure prevents reflux blood. Monosaccharide (mon’o-sak’a-rid), A simple sugar which cannot be decomposed by hydrolysis. Mono-unsaturated (mon’o-un-sat’u-rated). An organic compound such as a fatty acid in which two carbon atoms are united by a double bond. Motor nerves. Nerves which activate muscles and glands by conducting impulses away from the center (brain); efferent nerves, Mucous membrane (mu’kus). Thin layer of smooth tissue which lines many cavities and has special ability to secrete a slimy fluid called mucus. Muscle. Groups of special cells (muscle fibers) with the ability to contract or shorten. egg cell of reproduction in the female. Ovaries (o’vah-res), The two sex glands in the female which produce egg cells for reproduction. Ovulation (ahv-u-la’shun). Discharge of the egg from the ovary. Ovum (o’vum). Female egg cell of reproduction, Oxygen (ok’si-jen). Gaseous element found in free air; essential to life of human tissue cells. Oxygenated (ok’si-je-na-ted). Saturated with oxygen. of the many ways it controls and influences organs and body processes. Plasma (plaz’mah). Fluid portion of blood in which cells are suspended. Pancreas (pan’kre-as). A gland which is both endocrine and exocrine; located behind the stomach, the pancreas produces secretions concerned with digestion, Pantothenic acid (pan’to-then’ik). A member of the vitamin B complex. Parathyroid glands (par-ah-thi’roid). Two pairs of small endocrine glands usually attached to the back of the thyroid gland.
concerned with the sense of smell. Optic nerve (op’tik). Second cranial nerve with special sense of sight. Organ of Corti. The hair cells (final sensory receptors of sound) located in the inner ear. Osteomalacia (os’te-o-ma-la’she-a). Softening of the bone due to loss of calcium. Occurs chiefly in adults. Osteoporosis (os’te-o-po-ro’sis). Abnormal porousness or rarefaction of bone due to failure of the osteoblasts to lay down bone matrix, and occurring when resorption dominates over mineral deposition. Oval window. Division between middle and inner ear. Ovarian follicles (o-va’re-an fol’li-kls). Blisterlike formations on the ovary which rupture when they ripen and release the Phospholipid (fos’fo-lip’id). A fat in which one fatty acid is replaced by phosphorus and a nitrogenous compound. Photosynthesis (fo’to-sin’the-sis). Formation of carbohydrate from carbon dioxide and water in the chlorophyll tissue of plants under the influence of light. Pinna (pin’nah). Auricular appendage; portion of external ear visible at sides of the head. Pituitary gland (pi-tu’i-tar-e). The “master” gland of the body, so-called because
Pleura (ploor’ah). Membranous sac which encloses the lungs and lines the chest cavity. Parietal pleura lines the chest cavity andvisceralpleura adheres closely to the lungs. Polysaccharide(pol’e-sak’ah-rid). Acomplex carbohydrate which contains more then ten molecules of monosaccharides combined with each other. Polyunsaturated (pol’e-un-sat’u-rat’ed). An organic compound such as a fatty