CH 10 Hematology

Hemostasis

the physiological process that stops bleeding, involving a series of steps to form a blood clot at the site of a vessel injury

Hematopoiesis

the process of blood cell formation, starting with hematopoietic stem cells (HSCs) in the bone marrow

Hemophilia

an inherited bleeding disorder in which blood does not clot properly

Agranulocytosis

a rare blood disorder that occurs when there are dangerously low levels of white blood cells in the blood; a severe form of Leukopenia

Neutropenia

a condition characterized by having a lower-than-normal number of neutrophils, a type of white blood cell that helps fight bacterial infections

Aplastic anemia

a rare but serious blood disorder where the bone marrow stops producing enough new blood cells, resulting in low counts of red blood cells, white blood cells, and platelets

Lymphadenopathy

refers to the enlargement of lymph nodes

Leukopenia

low white blood cell count

Venous stasis

slow blood flow in the veins, usually of the legs

Thrombosis

a blood clot that forms in a blood vessel

Emboli

here is more than one clot or piece of plaque

Fibrinolysis

the natural process of dissolving fibrin clots in the body

Hypercoagulability

a condition where the blood is at an increased risk of forming blood clots

Thrombocytosis

a condition in which there are too many platelets in the blood

Thrombocytopenia

a low platelet count, is a condition where the blood doesn't have enough platelets

Petechiae

pinpoint, red or purple spots on the skin caused by bleeding from small blood vessels (capillaries)

Sickle Cell

red blood cell disorder where abnormal hemoglobin causes red blood cells to become stiff and sticky, resembling a crescent or sickle shape

Polycythemia vera (PV)

a rare blood disorder where the bone marrow produces too many red blood cells

Anorexia nervosa

an eating disorder where a person intentionally refuses to eat causing low body weight

Anorexia

hunger is absent and that the person has no desire to eat causing low body weight

hemoglobin HgB

measures the amount of oxygen-carrying protein in the blood

Hematocrit Hct

measures the amount of space red blood cells taken up in the blood; reported as a percentage