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