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A moving blood clot is called a(n)

thrombus. (WRONG ANSWER)

The enzyme that can digest fibrin and dissolve a clot is

plasmin

The process of fibrinolysis

dissolves clots.

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

the liver

________ involves a cascade of reactions leading to the conversion of fibrinogen to fibrin.

coagulation

A person with a low platelet count is suffering from

thrombocytopenia.

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

megakaryocytes.

The function of platelets is to assist in the

immune response during an infection. (WRONG ANSWER)

During a bacterial infection you would expect to see increased numbers of

neutrophils

Which of the following is true of basophils?

all answers are true

Which of these descriptions best matches the term B lymphocytes?

give rise to antibody producing plasma cells

Which of the following is not true of neutrophils?

less abundant than lymphocytes

The most numerous WBCs in a differential count of a healthy individual are

neurtrophils

White blood cells that are increased in allergic individuals are the

eosinophils.

Which of these descriptions best matches the term colony stimulating factor?

hormone that regulates blood cell formation

________ are the leave the bloodstream to become macrophages.

monocytes

White blood cells that release histamine at the site of an injury are

basophils

All of the following are true of neutrophils, except that they are

important in coagulation.

The most numerous white blood cells in peripheral circulation are the

neutrophils

Granulocytes form in

red bone marrow

Which of the following combinations may result in the hemolytic disease of the newborn:

mother Rh negative, baby Rh positive

Type AB blood has which of the following characteristics:

RBCs have both the A & B surface antigens and no ABO plasma antibodies.

Bill wants to determine his blood type, so he takes a few drops of blood from a puncture wound in his finger and mixes it with various antisera. His blood cells agglutinate when mixed with the anti-A sera but not with the anti-B or anti-D sera. This means

Bill's plasma contains B antibodies.

Antigens of the surface of red blood cells are also called ________ and antibodies in the blood plasma are also called ________.

agglutinogens; agglutinins

Each hemoglobin molecule contains

four iron atoms.

Erythropoiesis takes place in

red bone marrow

The process of red blood cell production is called

erythropoiesis.

The waste product bilirubin is produced from

heme molecules lacking iron.

Aged and damaged erythrocytes are broken down by macrophages in the

spleen, liver, and bone marrow.

Pernicious anemia caused by a lack of intrinsic factor is specifically treated by

injections of vitamin B12.

________ is a condition in which the oxygen-carrying capacity of the blood is reduced.

Anemia

The function of hemoglobin is to

carry dissolved blood gases.

More than 95 percent of the protein in a red blood cell is

hemoglobin.

In which of the following situations would you expect the blood level of bilirubin to be elevated?

low blood volume (WRONG ANSWER)

Each heme ring in hemoglobin encloses an atom of

iron

Eileen is a strict vegan and therefore eats no animal products. She develops an anemia that her doctor thinks is caused by a nutritional deficiency. Which of the following is the likeliest candidate?

iron deficiency (WRONG ANSWER)

The function of red blood cells is to

carry oxygen to the cells and then carry away carbon dioxide.

The average life span of a red blood cell is

4 months

Mary is tested for the amount of hemoglobin in her blood. The test results indicate that her hemoglobin level is 16 g/dL of blood. This value indicates that

her hemoglobin level is normal.

When a person who lives at sea level vacations in the Rocky Mountains, you would expect

All are correct

The disease sickle cell anemia is an example of what can happen if

a gene for adult hemoglobin is abnormal.

Erythrocytes:

lack a nucleus and most organelles

Which one of the following represents the proper sequence of hemostasis:

vascular spasm, platelet plug formation, coagulation

Erythropoeitin is a hormone produced by the kidneys in response to low levels of:

oxygen

The hormone that regulates the rate of erythrocyte production is called:

erythropoietin

Which type of leukocyte contains heparin, an anticoagulant:

basophil

Platelets are fragments of multinucleate cells called:

megakaryocytes

In a centrifuged blood sample, the buffy coat between the formed elements and the plasma contains:

leukocytes and platelets

Which one of the following formed elements is the most abundant:

erythrocytes

Hematocrit is the percentage of:

erythrocytes in blood

Which one of the following is NOT a physical characteristic of blood:

sweet tasting

Which of these proteins functions to store or transport iron?

ferritin, hemosiderin, and transferrin

The matrix of blood is called:

plasma

Which of the following statements concerning red blood cells is false?

None, all the above statements are true.

Red blood cell production is regulated by which hormone

erythropoietin.

All the circulating red blood cells in an adult originate in the

red bone marrow

A plasma protein essential for blood coagulation is

fibrinogen

The most abundant proteins in blood plasma are

albumins.

Which organ secretes most of the plasma proteins?

liver

Which of these is not one of the formed elements of blood?

antibodies

A typical adult hematocrit is

45

The most abundant component of plasma is

water

Each of the following is a characteristic of whole blood, except a

viscosity about the same as water.

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

hematocrit.

Which of the following is a function of the blood?

all are true

An individual who is blood type AB negative can ________.

receive any blood type in moderate amounts except that with the Rh antigen

What organ in the body regulates erythrocyte production?

kidney

Complications of aplastic anemia generally do not include ________.

increase of leukocytes as a result of erythrocyte loss

When can erythroblastosis fetalis not possibly happen in the child of an Rh negative mother?

if the father is Rh-

Fred's blood was determined to be AB positive. What does this mean?

There are no antibodies to A, to B, or to Rh antigens in the plasma.

Platelets ________.

stick to the damaged area of a blood vessel and help seal the break

Thromboembolic disorders ________.

include embolus formation, a clot moving within the circulatory system

Which of the following is not a phase of hemostasis?

fibrinolysis

A lack of intrinsic factor, leading to a deficiency of vitamin B12 and large pale cells called macrocytes, is characteristic of ________.

pernicious anemia

No visible cytoplasmic granules are present in ________.

monocytes

Which of these is not a normal plasma protein?

thromboplastin

All of the following can be expected with polycythemia except ________.

low blood viscosity

Select the correct statement regarding blood cell formation

Red marrow is the main site of blood cell formation throughout adult life.

James has a hemoglobin measurement of 16 g/100 ml blood. This is ________.

within the normal range

When neither anti-A sera nor anti-B sera clot on a blood plate with donor blood, the blood is type ________.

O

The most abundant plasma protein is ________.

albumin

As red blood cells age ________.

membranes "wear out" and the cells become damaged

Which of the following might trigger erythropoiesis?

hypoxia of EPO-producing cells

Which of the choices below is the parent cell for all formed elements of blood?

pluripotent stem cell (hemocytoblast)

What is the average normal pH range of blood?

7.35-7.45

Leukemia refers to cancerous conditions of white blood cells.

True

Hemorrhagic anemias result from blood loss.

T

Each hemoglobin molecule can transport two molecules of oxygen.

F

Leukopenia is an abnormally low number of leukocytes.

T

Diapedesis is the process by which red blood cells move into tissue spaces from the interior of blood capillaries.

F

A person with type B blood could receive blood from a person with either type B or type O blood.

T

Granulocytes called neutrophils are phagocytic and are the most numerous of all white blood cell types.

T

All lymphocytes are leukocytes, but not all leukocytes are lymphocytes.

T

Basophils increase in number when parasitic invasion occurs.

F

A condition of leukocytosis indicates over 11,000 white blood cells per cubic millimeter in the blood.

T

Each heme contains an atom of iron and can transport one molecule of oxygen

T

The RBC "graveyard" is the liver.

F

Hemoglobin is made up of the protein heme and the red pigment globin.

F

White blood cells are produced through the action of colony-stimulating factors.

T

The immediate response to blood vessel injury is clotting.

F

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