51.Which of the following describes hepcidin?

a.a factor in meats that enhances iron absorption

b.an intestinal mucosa protein that assists in iron turnover

c.a substance in legumes that interferes with iron absorption

d.a liver-derived hormone that helps regulate iron absorption and transport

52.Which one of the following numbers indicates a typical woman’s total monthly blood loss?

a.0.5 mg

b.1.0 mg

c.1.5 mg

d.2 mg

53.What is the average lifespan of red blood cells?

a..2 weeks

b.1 month

c.4 months

d.6 months

54.Approximately how many people worldwide are thought to be affected by iron-deficiency anemia?

a.1 million

b.100 million

c.1.6 billion

d.3.5 billion

55.What is the chief function of hemosiderin?

a.storage of excess body iron

b.inhibition of hemoglobin synthesis

c.enhancement of heme iron absorption

d.enhancement of non-heme iron absorption

56.Approximately how much iron is lost daily by adults from urine, sweat, and shed skin?

a.1 mg

b.5 mg

c.12 mg

d.18 mg

57.What is the major cause of iron deficiency?

a.blood loss

b.poor nutrition

c.hereditary defect

d.parasitic infections of the GI tract

58.Which of the following numbers indicates the number of stages to iron deficiency?

a.2

b.3

c.4

d.5

59.Which of the following population groups is least susceptible to iron-deficiency anemia?

a.older infants

b.children 2–10 years of age

c.women of childbearing age

d.men 20–45 years of age

60.Which of the following is found in the first stage of iron deficiency?

a.Iron stores decline, as assessed by serum ferritin.

b.Hemoglobin levels fall, as assessed by complete blood count.

c.Red blood cell count falls, as assessed by hematocrit count.

d.Hemoglobin synthesis declines, as assessed by erythrocyte protoporphyrin.