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
