Blood Cells

What is leukocytosis?

Abnormally high count of WBCs.

Basophils are the most numerous type of leukocyte.

False! -

Erythropoeitin is released to stimulate platelet production in response to inadequate amounts of oxygen in the blood.

False! -

Polycythemia arises from an excess or abnormal increase in the number of white blood cells.

False! -

The amount of hemoglobin contained within a RBC determines its capability to transport oxygen.

True!

White blood cells differ from red blood cells because only they contain ________.

a nucleus and most organelles

A decrease in the oxygen-carrying ability of the blood, for any reason, is a condition known as ________.

anemia

Which type of leukocyte contains heparin, an anticoagulant?

basophil

The process by which white blood cells travel through the wall of blood vessels is termed ________.

diapedesis

Which formed element is the most abundant in blood?

erythrocyte

The rate of erythrocyte production is controlled by a hormone known as ________.

erythropoietin

Percentage of erythrocytes in the blood is known as...

heatocrit

Which cell the precursor of all types of blood-formed elements?

hemocytoblast

Low levels of oxygen in the blood stimulate the release of erythropoietin by the ________.

kidneys

Erythrocytes ________.

lack a nucleus and most organelles

Which blood cells are responsible for fighting infections?

leukocytes

A total white blood cell count above 11,000 cells/mm3 is a condition known as ________.

leukocytosis

Abnormally low levels of white blood cells causes a condition known as ________.

leukopenia

What term refers to a deficiency of white blood cells?

leukopenia

Which type of leukocyte produces antibodies?

lymphocytes

Platelets are fragments of a multinucleate cell known as a ________.

megakaryocyte

The most numerous of the white blood cells are the ________.

neutrophils

Life at a high altitude can lead to a red blood cell disorder known as ________.

polycythemia