Exam 20: Blood

Match each substance involved in blood clot formation with its description or function. -substance that hydrolyzes fibrin strands and dissolves blood clots

Hematocrit and serum are synonymous terms.

The bicarbonate ions formed in carbon dioxide transport move out to the plasma and help the body adjust pH.

The mature red blood cell has no nucleus.

People with type O blood are considered universal donors and therefore cross-matching is not needed before transfusing their blood.

Which of the following does not hasten clotting?

Conditions that result in decreased red blood cell numbers are called anemias.

Streptokinase is an enzyme that can be used to dissolve clots.

Carbon dioxide is transported as bicarbonate ions because of a chemical reaction catabolized by the enzyme:

People with type AB blood are considered universal donors.

Match each term with its corresponding description. -granulocytes that protect against infections caused by parasitic worms and allergic reactions

The buffy coat is composed of all the formed elements except red blood cells.

The major ingredient in hemoglobin that allows oxygen to be transported is:

The protein spectrin helps keep the red blood cells rigid so they are not deformed when passing through a capillary.

Vitamin B₁₂ is also called the intrinsic factor.

Streptokinase,an enzyme from certain streptococci,can cause clot dissolution.

What substance does not assist in the formation of a blood clot?

Match each term with its corresponding description. -cells from which platelets are produced

Which of the following is an example of a leukocyte?

The buffy coat composes about 5% of the total blood volume.