Chapter 27: Structure and Function of the Hematologic System

Question 1

Approximately ___ of total body iron is bound to ____ in ____________ (hemoglobin) and muscle cells (myoglobin).

Answer 1

2/3, heme, erythrocytes

p. 963

Question 2

The body’s total iron balance is maintained through…

Answer 2

…controlled absorption rather than excretion.

p. 964

Question 3

What is ferritin?

Answer 3

The major intracellular iron storage protein.

p. 963

Question 4

What is apoferritin?

Answer 4

Ferritin without attached iron, that can store thousands of atoms of iron.

(p. 963)

Question 5

What is heme?

Answer 5

A large, flat iron-protoporphyrin disk that is synthesized in the mitochondria and can carry one molecule of oxygen (O2).

(p. 961)

Question 6

What is anisocytosis?

Answer 6

A state in which erythrocytes assume various sizes.

p. 982

Question 7

What is poikilocytosis?

Answer 7

A state in which erythrocytes assume various shapes.

p. 982

Question 8

The extrinsic pathway is clearly predominant; individuals with deficiencies in intrinsic pathway components do not…

Answer 8

….have prolonged bleeding.

p. 970

Question 9

Products of fibrinolysis include ______ __________ products, and a major one of these products is ______.

Answer 9

fibrin degradation
D-dimer

(p. 973)