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StraighterLine Anatomy and Physiology II -
Chapter 19: Blood. Exam Questions With
Complete Solutions.
The only formed elements that possess a nucleus when mature are the:
a. thrombocytes
b. erythrocytes
c. leukocytes
d. platelets
e. RBCs - answer✔c. leukocytes
In the platelet release reaction,
a. factor XII is activated
b. ADP and thromboxanes stimulate other platelets to become activated
c. activated platelets are connected by fibrinogen
d. prostaglandin production is inhibited
e. platelets convert to fibrin - answer✔b. ADP and thromboxanes stimulate other platelets to
become activated
Which of the following is NOT a form of hemoglobin found in the developing human?
a. adult
b. embryonic
c. adolescent
d. fetal - answer✔c. adolescent
Healing after clot formation involves
a. clot retraction.
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b. repair of the damaged blood vessel by connective tissue cells.
c. clot dissolution.
d. serum being squeezed out of the clot.
e. All of these choices are correct. - answer✔e. All of these choices are correct
When defective erythrocytes are broken down,
a. they are removed from the blood by the lungs.
b. bilirubin is formed from the breakdown of hemoglobin.
c. their heme groups are converted into amino acids.
d. their iron is excreted into the small intestine.
e. their components cannot be recycled. - answer✔b. bilirubin is formed from the breakdown
of hemoglobin
The hematocrit is
a. an estimate of blood flow/hour.
b. the number of WBCs per mm3.
c. the amount of hemoglobin by weight in the blood.
d. the percentage of RBCs in a given volume of blood.
e. the number of RBCs in the body. - answer✔d. the percentage of RBCs in a given volume of
blood
When a person develops a sore throat, white blood cells are drawn to the area of infection by a
process called
a. chemotaxis.
b. diapedesis.
c. margination.
d. ameboid movement.
e. attraction. - answer✔a. chemotaxis
The function of plasmin is to
a. hydrolyze fibrin.
b. activate factor XII.
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