Category: Wa-Wz

  • Wing bone

    Popular and familiar term for the scapula, the flat triangular bone at the back of the shoulder. The word “scapula” (with the accent on the first syllable) is a steal straight from the Latin. The Romans always employed the plural “scapulae”, the shoulder blades. Because the shoulder blade resembles the blade of a trowel (a small shovel),…

  • World Health Organization

    The subagency of the United Nations (UN) that is concerned with international health. Abbreviated WHO. Also known as Organisation Mondiale de la Sant’ (OMS).

  • White matter

    The part of the brain that contains myelinated nerve fibers. The white matter is white because it is the color of myelin, the insulation that covers nerve fibers.

  • White blood cell count (leukocyte count)

    The number of white blood cells (WBCs) in the blood. The WBC is usually measured as part of the CBC (complete blood count). White blood cells are the infection-fighting cells in the blood and are distinct from the red (oxygen-carrying) blood cells known as erythrocytes. There are different types of white blood cells, including neutrophils (polymorphonuclear leukocytes; PMNs),…

  • White blood cell

    One of the cells the body makes to help fight infections. There are several types of white blood cells (leukocytes). The two most common types are the lymphocytes and neutrophils (also called polymorphonuclear leukocytes, PMNs, or “polys”). Lymphocytes are made in lymphoid tissue in the spleen, lymph nodes, and thymus gland. There are different kinds of lymphocytes. Lymphocytes identify foreign…

  • Whipworm

    A nematode (roundworm), also called Trichuris trichiura, that is the third most common roundworm in humans. The whipworm is found worldwide, and whipworm infections are most frequent among children and in areas with tropical weather and poor sanitation practices. Infection with whipworm most often occurs without symptoms. Heavy infections, especially in small children, can cause gastrointestinal problems (such as…

  • Wheezing

    A whistling noise in the chest during breathing. Wheezing occurs when the airways are narrowed or compressed.

  • Wheal

    A raised, itchy (pruritic) area of skin that is sometimes an overt sign of allergy. Not all wheals are alike. They may be redder or paler than the skin around them. They may vary in configuration and may be rounded or flat-topped. Wheals typically have a reddish hue. They characteristically change in size and shape and…

  • Whartons jelly

    A gelatinous substance that provides insulation and protection within the umbilical cord. Stem cells are present in Wharton’s jelly, as well as in umbilical cord blood.

  • WF

    Medical shorthand for white female.