Ch 11.1 Multiple Choice

Platelet life span is A. 30 days and removed by the spleen B. 120 days and removed by the kidneys C. 10-12 days and removed by phagocytes D. 2 days and removed by the liver

10-12 days and removed by phagocytes

The average lifespan of a red blood cells is; A. 7 days B. 1 month C. 120 days D. 6 months

120 days

The hemoglobin molecule is composed of A. 3 protein chains and 4 heme groups B. 2 protein chains and 2 heme groups C. 4 protein chains and 2 heme groups D. 4 protein chains and 4 heme groups

4 protein chains and 4 heme groups

The composition of whole blood is __?__ % plasma and __?__ formed elements. A. 50;50 B. 45;55 C. 55;45 D. 60;40

55;45

Water comprises +/- __?__ % of whole blood while RBCs are just short of __?__ %.; A. 55;50 B. 92;97 C. 45;55 D. 51;45

92;97

Blood transports dissolved gasses, bringing oxygen from the lungs to the tissue and carrying; A. CO2 from the lungs to the tissues B. CO2 from one peripheral cell to another C. CO2 from the interstitial fluid to the cell D. CO2 from the tissues to the lungs

CO2 from the tissues to the lungs

Blood is A a specialized connective tissue B. an organ C. a fibrous tissue D. answer not given

a specialized connective tissue

Erythropoietin directly stimulates RBC formation by: A. increasing rates of mitotic division in erythroblasts B. speeding up the maturation of red blood cells C. accelerating the rate of Hb synthesis D. a, b and c are correct

a, b and c are correct

Venipuncture is a popular blood sampling technique because; A. superficial veins are easy to locate B. veins release blood at a faster rate than arteries C. the walls of veins are thinner than those of arteries of comparable size D. blood pressure in the venous system is relatively low, so the puncture wounds seals quickly E. a, c and d only

a, c and d only

The three primary classes of plasma proteins are; A. antibodies, metalloproteins, lipoproteins B. serum, fibrin, fibrinogen C. albumins, globulins, fibrinogen D. heme, porphyrin, globin

albumins, globulins, fibrinogen

Physical characteristics of whole blood include A. temperature slightly higher than body temperature B. viscosity is five times greater than water C. sticky, cohesive and resistant to flow D. pH slightly alkaline E. all answers are correct

all answers are correct

Circulating mature red blood cells lack; A. mitochondria B. ribosomes C. nuclei D. all of the above

all of the above

In addition to water and proteins, the plasma consist of; A. erythrocytes, leukocytes, and platelets B. electrolytes, nutrients and organic waste C. albumins, globulins, and fibrinogens D. all of the above

all of the above

The primary function(s) of plasma is (are); A. it absorbs and releases heat as needed by the body B. it transports ions C. it transports red blood cells D. all of the above

all of the above

Dehydration would cause:; A. an increase in the hematocrit B. a decrease in the hematocrit C. no effect in the hematocrit D. an increase in plasma volume

an increase in the hematocrit

Blood starts circulating __?__ when the heart starts beating. A. at parturition B. at the end of the third week C. just three days before parturition D. at the beginning of the 20th week

at the end of the third week

The usual shape of the RBC; A. provides a larger surface area to volume ratio that increases the rate of diffusion between its cytoplasm and the surrounding plasma B. enables it to bend and flex to squeeze through narrower capillaries C. both a and b are correct D. answer is not given

both a and b are correct

Red blood cell formation is initiated by; A. a condition of hypoxia causes kidney cells to release EPO B. high oxygen detected by kidney cells causes the release of EPO C. low oxygen detected by kidney cells causes the release of EPO D. both a and c are correct

both a and c are correct

The function of hemoglobin is to; A. carry oxygen B. protect the body against infectious agent C. aid in the process of blood clotting D. all of the above

carry oxygen

Loose connective tissue and cartilage contain a network of insoluble fibers, whereas plasma contains; A. dissolved proteins B. a network of collagen and elastic fibers C. elastic fibers only D. collagen fibers only

dissolved proteins

Red blood cells are called A. leukocytes B. thrombocytes C. erythrocytes D. none of the above

erythrocytes

RBC production is regulated by the hormone; A. thymosin B. angiotensin C. rennin D. erythropoietin

erythropoietin

The plasma protein involved in blood clotting is; A. fibrinogen B. albumin C. hemoglobin D. immunoglobulin

fibrinogen

The stem cells that produce all the blood cells are called; A. erythroblasts B. rouleaux C. hemocytoblasts D. plasma cells

hemocytoblasts

The formed elements in the blood are produced by the process of; A. hemolysis B. hemopoiesis C. diapedesis D. erythrocytosis

hemopoiesis

The plasma proteins involved in fighting infections are; A. albumins B. fibrinogens C. immunoglobulins D. lipoproteins

immunoglobulins

Which is not a function of blood? A. restriction of fluid loss B. transportation of hormones to target tissues C. distribution of nutrients absorbed by the digestive tract D. stabilization of body temperature by either loosing temperature at the skin surface or shunting the blood to the brain E. increases pH and electrolyte levels F. defense against toxins and pathogens

increases pH and electrolyte levels

Platelets are derived from; A. bone marrow B. megakarocytes C. stem cells D. thromobocytes

megakarocytes

The formed elements of the blood consist of; A. antibodies, metalloproteins, and lipoproteins B. red and white blood cells, and platelets C. albumins, globulins, and fibrinogen D. electrolytes, nutrients, and organic wastes

red and white blood cells, and platelets

Aged and damaged erythrocytes are broken down by A. spleen B. kidneys C. liver D. bone marrow

spleen

The reason red blood cells can carry oxygen successfully is A. that they obtain energy through the use of anaerobic metabolism B. that their mitochondria don't need as much oxygen C. CO2 is absent D. all are correct

that they obtain energy through the use of anaerobic metabolism

The primary function(s) of a mature red blood cell is A. transport of respiratory gases B. delivery of enzymes to target tissues C. defense against toxins and pathogens D. all of the above

transport of respiratory gases

The "patrol agents" in the blood that defend the body against toxins and pathogens are; A. hormones and enzymes B. albumins and globulins C. white blood cells and antibodies D. red blood cells and platelets

white blood cells and antibodies

The combination of plasma and formed elements is called; A. serum B. interstitial fluid C. intracellular fluid D. whole blood

whole blood