A&P 1 Chapter 12

Patients with leukemia have a tendency to bleed because they have a deficiency of

• vitamin K.

• red blood cells.

• platelets.

• leukocytes.

• plasma.

Which of the following serves as an enzyme in the blood coagulation mechanism?

• Thrombin

• Prothrombin

• Fibrinogen

• Fibrin

• Serotonin

Which of the following elements is included in hemoglobin molecules?

• Cobalt

• Copper

• Iron

• Iodine

• Calcium

The condition called cyanosis is caused by an increased blood concentration of

• deoxyhemoglobin.

• oxyhemoglobin.

• carbon dioxide.

• carbon monoxide.

• oxygen.

As a platelet plug forms, platelets release the vasoconstricting substance called

• collagen.

• creatine.

• serotonin.

• fibrin.

• acetylcholine.

Which of the following usually accounts for the smallest percentage of leukocytes in a blood sample?

• Monocytes

• Eosinophils

• Basophils

• Lymphocytes

• Neutrophils

Of the plasma electrolytes, the most abundant are

• sodium and chloride ions.

• sodium and potassium ions.

• potassium and calcium ions.

• phosphate and sulfate ions.

• magnesium and phosphate ions.

The red blood cells of type AB blood have on their surfaces

• antigens A and B.

• antigen A only.

• antigen B only.

• neither antigen A nor B.

• different A and B antigens depending upon circumstances.

The most common blood type in the United States has which type(s) of antibodies in its plasma?

• Anti-A antibodies only

• Anti-B antibodies only

• Both anti-A and anti-B antibodies

• Neither anti-A nor anti-B antibodies

• Anti-O antibodies

The normal white blood cell count is between

• 400-1,100 cells

  per microliter of blood.

• 4,000-11,000 cells

  per microliter of blood.

• 40,000-110,000

  cells per microliter of blood.

• 4,000,000-11,000,000 cells per microliter of blood.

• 130,000-360,000 cells per microliter of

  blood.