1/15 Ch. 17 Section 1 Blood

The total volume of blood in the body of an adult male is approximately ________ liters.

10 4 3 6 to 8 =5 to 6

Formed elements make up about what percentage of blood?

60 percent =45 percent 55 percent 20 percent 78 percent

A typical adult hematocrit is around

65. 25. 85. 75. =45.

You are caring for a female adult patient who weighs 40 kg (90 lbs). Assuming no loss of blood, what would her approximate blood volume be?

=3.8 L 6.0 L 6.6 L 1.8 L 5.6 L

Erythropoiesis is stimulated when

=Oxygen levels in the blood decrease and blood flow to the kidney declines. Oxygen levels in the blood increase. Oxygen levels in the blood increase and blood flow to the kidney declines. Blood flow to the kidney declines. Oxygen levels in the blood decrease.

Each of the following is a way that blood transports materials around the body except

=carbon dioxide from the lungs to the tissues. nutrients from the digestive tract to the body. wastes from the cells to the kidneys. hormones from endocrine glands to target cells. stored nutrients from the liver to the tissues.

Hormones called ________ are involved in regulation of white blood cell populations.

=colony-stimulating factor estrogen fibrin testosterone erythropoietin (EPO)

Which of the following are the most abundant of the formed elements?

=erythrocytes leukocytes globulins platelets

The process of white blood cell production goes on in all of the following except

=the kidney. the thymus. the lymph nodes. the spleen. red bone marrow.

Each of the following is a characteristic of whole blood except

=viscosity about the same as water. the ability to neutralize acids. the ability to absorb heat from active skeletal muscles. deep red color. a built-in system for clotting.

A plasma protein essential for blood coagulation is

albumin alpha. platelets. transport proteins. immunoglobulin A. =fibrinogen.

The level of erythropoietin in the blood would rise due to all of the following except

at high altitudes. when blood flow to the kidneys is disrupted. during anemia. =during periods of fasting. as a consequence of hemorrhage.

Which plasma protein is a major contributor to the osmotic pressure of plasma?

fibrinogen hormone-binding protein steroid-binding protein gamma globulin =albumin

Plasma proteins essential in body defense are the

fibrinogens. =immunoglobulins. transport proteins. platelets. albumins.

The most abundant component of plasma is

gases. proteins. ions. nutrients. =water.

Most of the protein factors that are required for clotting are synthesized by

megakaryocytes. the spleen. the kidneys. =the liver. platelets.

Platelets are pinched off from giant multinucleated cells in the bone marrow called

normoblasts. erythroblasts. myeloblasts. =megakaryocytes. lymphoblasts.

Which organ secretes most of the plasma proteins?

pancreas kidney =liver heart brain

Red blood cell production is regulated by the hormone

renin. thymosin. =erythropoietin. albumin. angiotensin.

Which of the following is not a function of the blood?

restricts fluid losses at injury sites transports nutrients to the tissues regulates the pH and ion concentrations of interstitial fluids =generates body temperature

A hematocrit provides information on

sedimentation rate. clotting factors. plasma composition. blood type. =formed elements abundance.

The normal pH of blood is

slightly acidic. extremely alkaline. =slightly alkaline. extremely acidic. neutral.

Platelets are

tiny cells with a polynucleus. large cells with a prominent, concave nucleus. blue cells that have a nucleus. =cytoplasmic fragments of large cells. red cells that lack a nucleus.

Which of the following is a function of the blood?

transport of nutrients and wastes transport of gases transport of body heat defense against toxins and pathogens =All of the answers are correct.

The most abundant proteins in blood plasma are

transport proteins. fibrinogens. globulins. lipoproteins. =albumins.

Which of the following statements is false?

The heart propels blood and helps maintain blood pressure. Arteries carry blood away from the heart. =Veins return blood to the capillaries Capillaries permit diffusion between blood and interstitial fluids.

The percent fraction of formed elements relative to whole blood is the

differential cell count. specific gravity. packed volume. =hematocrit. viscosity.