A hemoglobin molecule is composed of:
(a) Two protein chains
(b) Three protein chains
(c) Four protein chains and nothing else
(d) Four protein chains and four heme groups
(e) Four heme groups but no protein

Blood temperature is approximately ___, and blood pH averages ___.

(a) 36 °C, 7.0

(b) 39 °C, 7.8

(c) 38 °C, 7.4

(d) 37 °C, 7.0

Plasma contributes approximately _____ percent of the volume of whole blood, and water accounts for _____ percent of the plasma volume.

(a) 55, 92

(b) 25, 55

(c) 92, 55

(d) 35, 72

Blood proteins play an important part in:

a. Blood clotting

b. Immunity

c. Maintenance of blood volume

d. All of the above

Serum is:

(a) The same as blood plasma

(b) Plasma minus the formed elements

(c) Plasma minus the proteins

(d) Plasma minus fibrinogen

(e) Plasma minus the electrolytes

The normal pH of the blood is about:

a. 8.4

b. 7.8

c. 7.4

d. 4.7

What five major functions are performed by blood?

List the three major categories of formed elements

Which is least numerous?

Which comprise(s) the buffy coat in a hematocrit tube?

More than one choice may apply. Plasma without the clotting proteins is called

a. Serum

b. Whole blood

c. Fibrin

d. Tissue factor