Basic Clinical Laboratory Techniques 6th Edition Lesson 3

Basic Clinical Laboratory Techniques 6th Edition By Barbara H. -Test Bank




Lesson 3-1: Principles of Hemostasis


TRUE/FALSE

1. The process of arresting blood loss from the blood vessels is called fibrinolysis.

ANS: F PTS: 1

2. Aspirin ingestion affects platelet function up to 12 days.

ANS: F PTS: 1

3. Crushing injuries can cause a serious intravascular clotting syndrome called DIC.

ANS: T PTS: 1

4. Tissue damage during blood collection releases tissue factor III.

ANS: T PTS: 1

5. Factors II, VII, IX, and X are vitamin K dependent.

ANS: T PTS: 1

6. When platelets stick to each other, it is called adhesion.

ANS: F PTS: 1

7. Calcium was formerly known as factor IV.

ANS: T PTS: 1

8. The formation of a clot is a simple process.

ANS: F PTS: 1

, 9. Hemophilia B is caused by a deficiency of factor XIII.

ANS: F PTS: 1

10. Activation of the extrinsic pathway requires factor III.

ANS: T PTS: 1


MULTIPLE CHOICE

1. Which of the following is true?
a. Arteriosclerosis is an abnormal thickening and hardening of arterial walls.
b. Arteriosclerosis is a form of atherosclerosis.
c. In atherosclerosis, only lipids are deposited on the inner walls of the arteries.
d. None of the above is true.
ANS: A PTS: 1

2. The process of stopping the loss of blood from the blood vessels:
a. is an uncomplicated process
b. involves interrelated and interdependent systems
c. is called fibrinolysis
d. is independent of any action by the vessels
ANS: B PTS: 1

3. All of the following are true of platelets EXCEPT:
a. Circulating platelets have a round disklike shape.
b. Contact with collagen initiates a shape change.
c. A platelet plug forms in seconds to stop bleeding in a small wound.
d. Platelet aggregation requires only that spiny pseudopods are present on the platelets.
ANS: D PTS: 1

4. Which of the following is initiated by damage to a blood vessel?
a. vasoconstriction c. fibrinolysis
b. coagulation d. all of the above
ANS: D PTS: 1

5. All of the following are true of the coagulation factors EXCEPT:
a. They are numbered in the order they were discovered.
b. VIII:C is called the antihemophilic factor (AHF).
c. They are produced in the liver and circulate in the activated form.
d. The mineral calcium was formerly named factor IV.
ANS: C PTS: 1


COMPLETION

1. The mineral involved in the hemostasis pathway is ____________________.

ANS:
calcium

, Ca++
ionized calcium

PTS: 1

2. The vitamin-K-dependent factors are manufactured in the ____________________.

ANS: liver

PTS: 1

3. The serious intravascular clotting condition that can occur after certain bacterial infections is called
____________________.

ANS:
disseminated intravascular coagulation
DIC

PTS: 1

4. Another name for the contact factor in the intrinsic pathway is ____________________.

ANS:
factor XII
Hageman factor

PTS: 1

5. Platelets undergo a shape change when they come into contact with exposed ____________________.

ANS: collagen

PTS: 1

6. Plasmin and plasminogen are important components of the ____________________.

ANS:
fibrinolytic system
fibrinolysis

PTS: 1

7. Thrombus is another name for a(n) ____________________.

ANS: clot

PTS: 1

8. When platelets stick to the damaged vessel, the process is called ____________________.

ANS: adhesion

PTS: 1