Racemose glands Glands which resemble a bunch of grapes.
Radiolabelling the act of making a drug or formulation radioactive to facilitate its tracking in vivo or the study of its metabolism.
Radiotelemetry capsule A capsule containing a small transmitter which can be swallowed or implanted, and transmits the value of a physiological variable, commonly pH or pressure.
Ranitidine H2 receptor antagonist used to reduce acid secretion.
Rectocele protrusion or hemiation of the posterior vaginal wall with anterior wall of the rectum through the vaginal.
Reserpine Drug which lowers blood pressure and acts as a tranquiliser.
Respiration Interchange of oxygen and carbon dioxide by breathing.
Reticulin An albuminoid or scleroprotein substance in the connective tissue framework or reticular tissue.
Reticuloendothelial system The collection of immune cells such as macrophages which identify and remove foreign materials.
Rhinitis Inflammation of the nasal mucosa.
Rhinorrhea Thin watery discharge from the nose. Riboflavin Vitamin B12 essential for tissue repair.
Rivinus's gland A sublingual gland.
Ryle's tube A small bore gastric tube, weighted at the tip and generally inserted through the nose.
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