A&P II Lecture Final CH. 11

________ are the most abundant cell population of the formed elements of blood.

Erythrocytes

During their formation, RBCs

eject their nucleus and most of their organelles.

In blood smear preparations, blood is collected from which type of vessel?

peripheral capillaries

The average life span of a red blood cell is about

4 months.

Blood is approximately ________ percent plasma by volume.

46-63

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

Anemia

Red blood cell production is stimulated directly by

EPO.

Plasma proteins that are necessary for blood to maintain osmotic pressure are

albumins.

Plasma and interstitial fluid account for most of the volume of ________ in the body.

extracellular fluid

The percentage of whole blood volume occupied by cellular elements is termed (the) ________.

hematocrit

Red blood cells result from the divisions of ________, which are multipotent stem cells.

hemocytoblasts

When large numbers of RBCs break down in the circulation, the urine can turn reddish or brown in a condition called ________.

hemoglobinuria

The chief difference between plasma and serum involves the

presence/absence of clotting proteins.

In adults, the stem cells responsible for the production of red and white blood cells originate primarily in the

red bone marrow.

The process of blood clotting is an example of which function of blood?

restricting fluid losses at injury sites

Which organ, a primary source of plasma proteins, synthesizes more than 90 percent of such proteins?

liver

Excess transferrins are removed in the ________, where the iron extracted from heme molecules is stored in special protein-iron complexes.

liver and spleen

The term ________ refers to the combination of plasma and the formed elements together.

whole blood

Fresh whole blood is usually collected through a procedure called

venipuncture.

The function of hemoglobin is to

bind and transport oxygen and carbon dioxide