Exam 21: Blood

The leukocyte that releases histamine is the

An abnormally small number of platelets in circulating blood is termed _________________.

How many oxygen molecules may bind to a single molecule of hemoglobin?

Which events occur during the recycling of aged or damaged erythrocytes? (Order is not important.) A: The heme group is converted into biliverdin. B: Bilirubin is stored in the liver. C: The iron ions in hemoglobin are removed. D: The iron ions are stored in the liver. E: The iron ions are stored in the red bone marrow. F: Membrane proteins and globin proteins are broken down and reused. G: The erythrocyte contents,excluding the globins,are excreted via the digestive tract unchanged.

The process of erythrocyte production is called _______________.

The life span of an erythrocyte is about _________ days.

In the centrifuged sample of blood illustrated,which number indicates the layer containing water,plasma proteins,nutrients,and waste products?

When viewing a centrifuged blood sample,the erythrocytes will be on the top.

The molecule to which both oxygen and carbon dioxide can attach in an erythrocyte is called _________________.

Which most closely approximates the percentage of water in plasma by weight?

The presence of hemoglobin in the urine is called ________________.

Erythropoietin is a hormone produced by the _______________ to increase the rate of production and maturation of erythrocyte progenitor and erythroblast cells.

The heme group from the phagocytized erythrocyte is converted into a green pigment called ________________.

____________ is the attraction of leukocytes to a site of infection due to the presence of molecules released by damaged cells,dead cells,or invading pathogens.

The "buffy" coat of the middle layer of a centrifuged blood sample is composed of

Which term best describes the function of blood when considering the presence of carbon dioxide and endocrine hormones?

Plasma makes up about ______ percent of a centrifuged sample of whole blood.

Which term best describes the function of blood when considering the presence of leukocytes and antibodies?

Why is the name "thrombocyte" inappropriate for platelets?

The process of producing the formed elements of blood is called