A&P II Ch. 19 Blood Lab QUIZ

Why is a differential WBC count more valuable than a total WBC count when trying to determine the specific source of pathology?

A differential count determines the relative percent of each type of WBC. Increase or decrease in specific WBC populations are often indicative of specific pathologies.

Type AB blood has which of the following characteristics:

RBCs have both the A & B surface antigens and no ABO plasma antibodies.

White blood cells that release histamine at the site of an injury are

basophils.

Blood type is identified primarily by

both the ABO and Rh blood groups.

White blood cells that are increased in allergic individuals are the

eosinophils.

Mary is tested for the amount of hemoglobin in her blood. The test results indicate that her hemoglobin level is 16 g/dL of blood. This value indicates that

her hemoglobin level is normal.

Why might patients with kidney disease suffer from anemia?

kidneys produce erythropoietin under conditions of low oxygen tension in the blood

Which of the following combinations may result in the hemolytic disease of the newborn:

mother Rh negative, baby Rh positive

The most numerous white blood cells in peripheral circulation are the

neutrophils.

Which of these descriptions best matches the term B lymphocytes?

produce antibodies in response to antigens

In adults, erythropoiesis exclusively takes place in

red bone marrow.

Assume the blood of two patients has been typed for ABO blood type. Typing results for Mr. Adams: Typing results for Mr. Calhoon: On the basis of these results, Mr. Adams has type blood, and Mr. Calhoon has type blood.

Mr. Adams has type O, and Mr. Calhoon has type A blood.

________ are large phagocytic white cells that spend most of their time outside the blood as fixed and free phagocytic cells.

Monocytes

Explain why an Rh-negative person does not have a transfusion reaction on the first exposure to Rh-positive blood but does have a reaction on the second exposure.

There are no preformed anti-Rh antibodies in the person's blood. Antibodies are formed after the first exposure to Rh+ blood.

Describe the relationship between high blood cholesterol levels and cardiovascular diseases such as hypertension, heart attacks, and strokes.

With increased LDLs, bad cholesterol is deposited into the blood vessel walls. A narrowing of the arteries or blocked arteries contribute to hypertensive heart disease and thrombi which may break away and block smaller vessels farther downstream in the circulatory pathway and cause heart attacks or strokes.