The thin membrane on the surface of the heart. See Endocardium and Myocardium. The study of a disease that deals with how many people have it, where they are, how many new cases develop, and how to control the disease. The outer surface layer of the skin that contains both squamous and basal cells. A procedure used to provide anesthesia during labor or surgery.
Medication is given through a catheter placed in the lower back.
Also called an epidural block. The small flap of cartilage that covers the trachea during swallowing so that food does not enter the lungs. On the outside of a nerve trunk. A special x-ray of the common bile duct utilizing an endoscope. An area of the body that causes sexual arousal when stimulated.