17. The Blood

How can poor nutrition lead to anemia?

Brittany, a healthy young woman, had a battery of tests during a physical for a new job. Her RBC count was at the higher end of the normal range at that time, but four weeks later it was substantially elevated beyond that. When asked if any circumstances had changed in her life, she admitted to taking up smoking. How might her new habit explain her higher RBC count?

More than one choice may apply.

If an Rh ⁻ mother becomes pregnant, when can hemolytic disease of the newborn not possibly occur in the child?

a. If the child is Rh ⁻

b. If the child is Rh⁺

c. If the father is Rh⁺

d. If the father is Rh ⁻

A woman comes to the clinic complaining of fatigue, shortness of breath, and chills. Blood tests show anemia, and a bleeding ulcer is diagnosed. What type of anemia is this?

More than one choice may apply.

In a person with sickle cell anemia, sickling of RBCs can be induced by

a. Blood loss

b. Vigorous exercise

c. Stress

d. Fever

More than one choice may apply. A child is diagnosed with sickle cell anemia. This means that

a. One parent had sickle cell anemia.

b. One parent carried the sickle cell gene.

c. Both parents had sickle cell anemia.

d. Both parents carried the sickle cell gene.

More than one choice may apply.

Polycythemia vera will result in

a. Overproduction of WBCs

b. Exceptionally high blood volume

c. Abnormally high blood viscosity

d. Abnormally low hematocrit

Define anemia, and give three possible causes.

Which antigens does a person with blood type A− have on the surface of his or her erythrocytes?

a. A antigens

b. B antigens

c. Rh antigens

d. Both a and c are correct.

e. All of the above

Total peripheral resistance:

a. is inversely proportional to the length of the vascular bed

b. increases in anemia

c. decreases in polycythemia

d. is inversely related to the diameter of the arterioles

Predict the effects of each of the following on systemic arterial blood pressure:

The practice of 'blood doping,' which increases the number of red blood cells in the blood