Ch 18 blood practice quiz

Which most closely approximates the percentage of water in plasma by weight?

92%

The first phase of hemostasis involves

blood vessel constriction

Fibrinolysis involves _________ of the fibrin framework, and it involves the protein _________.

destruction; plasmin

Beta-globulins transport _________, whereas gamma-globulins are _________.

iron ions, antibodies

Which clotting pathway involves the combining of thromboplastin (factor III) with factor VII and calcium?

the extrinsic pathway

Which clotting pathway involves more steps and takes more time (approximately 5 minutes)?

the intrinsic pathway

Congenital hemolytic anemia is

when destruction of erythrocytes is more rapid than normal

How many globins (protein building blocks) are found in a single hemoglobin molecule?

4

Which term best describes the function of blood when considering the presence of leukocytes and antibodies?

Protection (prevent blood loss-platelets in blood initiate clot formation)

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

Transportation (transport metabolic wastes to lungs for elimination)

Blood plasma is slightly _________; if pH drifts out of the normal range, dire consequences can result from alterations in the structure of _________ .

basic, proteins

Which are the least numerous of the leukocytes?

basinophils

The hemoglobin found in erythrocytes is able to chemically attach to

both oxygen and carbon dioxide

Oxygen-poor blood is _________ in color.

dark red

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

found on the surface of erythrocytes

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

Leukocytes are the _________ of the formed elements, and leukocytes have _________.

largest, prominent nuclei

Between the fifth week and fifth month of development, the _________blank is the primary site of hematopoiesis. After birth, however, the _________blank is the main site for hematopoiesis.

liver; red bone marrow

When blood oxygen is _________, erythropoietin is released, which _________ production of erythrocytes.

low; stimulates