Science / Biology / Medulla: 1. A term referring to the central portion of certain organs; e.g., the medulla oblongata of the brain and the adrenal medulla, which synthesizes epinephrine and norepinephrine. 2. In more common usage, the area in the brain that regulates breathing, heartbeat, blood pressure and similar activities.

Medulla Oblongata

Science / Biology / Medulla Oblongata: The region of the brain that, with the pons, makes up the hindbrain; controls heart rate, constriction and dilation of blood vessels, respiration, and digestion. MORE

Bone Curettage

Health / Dentistry / Bone Curettage: Gentle removal of medullary bone, using hand instruments, to create an implant receptor site. MORE


Health / Disease / Tumor: An abnormal mass of tissue that results from excessive cell division that is uncontrolled and progressive. Tumors perform no useful body function. Tumors can be either benign (not cancer) or malignant MORE

Cancellous Bone

Health / Dentistry / Cancellous Bone: Spongy bone tissue located in the medulla of bone rather than the cortex which is compact. This bone is composed of a variable trabecular network containing interstitial tissue which may be hematopoie MORE

Receptor Site Former

Health / Dentistry / Receptor Site Former: A duplicate form of a root shaped or blade shaped body of an implant. Designed to form an osseous implant receptor site for implant shapes that are not prepared with rotating instruments. Utilized for MORE


Science / Biology / Epinephrine: A hormone produced by the adrenal medulla and secreted under stress; contributes to the fight or fiight response. MORE