ch 18 quiz

How many oxygen molecules may bind to a single molecule of hemoglobin?

4

Typically, an adult's body contains _______ of blood.

5 liters

Which are the least numerous of the leukocytes?

Basophils

Which leukocytes are derived from the myeloid line?

Neutrophils, basophils, eosinophils, and monocytes

Which term best describes the function of blood when considering the presence of carbon dioxide and endocrine hormones?

Transportation

The first phase of hemostasis involves:

blood vessel constriction

The hemoglobin found in erythrocytes is able to chemically attach to

both oxygen and carbon dioxide

During platelet plug formation, platelets begin to stick to:

collagen

The formation of a web-like polymer of fibrin occurs late in the ________ pathway.

common

The most numerous of the formed elements, by far, are the:

erythrocytes

The agglutinogens (or antigens) that determine the ABO and Rh blood types are:

found on the surface of erythrocytes

The process of producing the formed elements of blood is called:

hemopoiesis

Platelets play a key role in _________, but if they are not used they are broken down after about ________ days.

hemostasis, 9

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

Old erythrocytes are phagocytized in the:

liver and spleen

T-cells are a category of:

lymphocytes

The type of leukocyte that will migrate in the blood and take up residence in the tissues as a macrophage is a(n):

monocyte

In hemopoiesis, granulocytes such as neutrophils are formed from the _________ line.

myeloid

The type of leukocyte that is very active during a bacterial infection is a(n):

neutrophil

The "buffy" coat of the middle layer of a centrifuged blood sample is composed of:

platelets and leukocytes

If agglutination occurs after a blood transfusion, it may indicate:

the wrong blood type was used

Blood is correctly classified as a(n):

tissue

To compensate for significant blood loss, the autonomic nervous system triggers:

vasoconstriction and an increase in heart rate

When trying to diagnose an infection that alters the percentages of leukocyte types found in the blood, it is useful for clinicians to perform a:

white blood cell differential count

The main function of leukocytes is to:

defend against pathogen

When blood is centrifuged and its components separate, the bottom of the tube holds the:

erythrocytes