Category: B

A pale, soft, alkaline metallic element; a radiopaque barium (barium sulfate) compound commonly used in radiographic studies of the gastrointestinal tract. A chemical element, forming poisonous compounds, used as a contrast medium when taking X-ray photographs of soft tissue. A radiopaque mineral used in the X-ray examination of the gastrointestinal tract. Element, compounds of which…

Abnormal noise of venous or arterial origin heard during auscultation. An abnormal sound heard in auscultation. A sound or murmur usually heard near or over a narrowed artery and occurring with each heartbeat. An unusual noise heard through a stethoscope. Abnormal sound, heard on listening with a stethoscope, which indicates turbulent flow of blood in…

Drug or other agent that relaxes and expands the air passages of the lungs. A drug which makes the bronchi wider, used in the treatment of asthma and allergy. Substance that causes relaxation of smooth muscle walls of bronchi, leading to dilation or widening of the opening (lumen). May result in improvement in a patient’s…

Drooping of the upper eyelid due to paralysis. Drooping of the upper eyelid tissue due to diseases that affect the muscles or nerves of the eye, such as myasthenia gravis or stroke. Drooping of one or both upper eyelids; also called ptosis. The cause is usually weakness in the muscle that raises the lid. In…

Irregularly shaped elevation of the epidermis. A blister. Blisterlike collection of fluid under the skin, varying from bean- to egg-sized. An irregularly shaped elevation of the epidermis; a blister or a bulla. Blebs may vary in size from less than 1 cm to as much as 5 to 10 cm; they may contain serous, seropurulent,…

Precursor of the final, mature form of a cell. A wave of air pressure from an explosion which can cause concussion. An immature form of a cell before distinctive characteristics develop. A cell that produces something (e.g., osteoblast, fibroblast). A sudden, violent movement of air such as accompanies the explosion of a shell or bomb;…

Presence of bilirubin in the urine. May be indicative of a liver or blood disorder. The presence of bilirubin (a yellow- or orange-tinged pigment in the bile) in the urine.