A&P2 Exam 1 part 1

blood is correctly classified as a?

tissue

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

platelets and leukocytes

plasma makes up about how much percent of a centrifuged sample of whole blood?

55

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

protection

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

transportation

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

92

one of the functions of blood is to regulate fluid levels in the body. if too much fluid escapes from the bloodstream and enters the tissues, will blood pressure increase or decrease?

decrease

the smallest and most abundant plasma proteins are the...

albumins

the globulins make up about what percentage of all plasma proteins?

37

the concentration of dissolved oxygen is higher, lower, or the same in plasma than in interstitial fluid?

higher

among the constituents of plasma, sodium, potassium and bicarbonate ions are classified as...

electrolytes

an individual's hematocrit is dependent on his or her

age, sex, altitude

one of the unhealthy effects of blood doping is to..

increase the viscosity of the blood

the reason it is more appropriate to call an erythrocyte a formed element rather than a cell is that erythrocytes

lack a nucleus and organelles

the hemoglobin found in erythrocytes is able to chemically attach to...

oxygen and carbon dioxide

how many globins (protein building blocks) are found in a single hemoglobin molecule?

4

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

4

the life span of an erythrocyte is about how many days?

120

what is congenital hemolytic anemia?

when destruction of erythrocytes is more rapid than normal

old erythrocytes are phagocytized in the?

liver and spleen

which are characteristics of type o blood?

has anti-a antibodies, has anti-b antibodies, has neither surface antigen a nor b on its erythrocytes

which are characteristics of type Rh negative blood?

only under certain conditions will Rh (anti-D) antibodies be present; is inherited independent of the ABO group

the agglutinogens (or antigens) that determine the ABO and Rh blood types are found where?

on the surface of erythrocytes

which is going to result in significant agglutination?

donor is type AB, recipient is type B

which of the leukocytes are granulocytes?

neutrophils, eosinophils, basophils