Lecture Quiz 2 - Lecture 13

Question 1

blood drawn directly from the body from which none of the components, such as plasma or platelets, has been removed

Answer 1

whole blood

Question 2

the yellow liquid component of blood along with the plasma proteins and other dissolved substances

Answer 2

blood plasma

Question 3

plasma from which the clotting proteins have been removed

Answer 3

blood serum

Question 4

what type of blood makes up about 55% of the total blood volume

Answer 4

blood plasma

Question 5

the stopping of blood flow

Answer 5

hemostasis

Question 6

what are the three overlapping mechanisms involved in hemostasis?

Answer 6

vascular spasm, platelet plug, fibrin clot

Question 7

the immediate and reflexive localized spasming of arteries or arterioles when their vessel walls are damaged

Answer 7

vascular spasm

Question 8

What are the three stages involved in the formation of a platelet plug?

Answer 8

Adhesion, Activation, Aggregation

Question 9

PLTS contact and stick to parts of a damaged blood vessel.

Answer 9

Adhesion

Question 10

PLTs undergo a physiological change. They extend projections that enable them to interact with each other and release serotonin and thromboxane A2

Answer 10

Activation

Question 11

What two things function as local vasoconstrictors?

Answer 11

Serotonin and TXA2

Question 12

release of chemicals, including TXA2, by the activated PLTs makes other PLTs in the area sticky as well so that they all begin binding to each other.

Answer 12

Aggregation

Question 13

What does aspirin do?

Answer 13

blocks the synthesis of TXA2 and therefore inhibits vasoconstriction and platelet aggregation

Question 14

the clotting of blood

Answer 14

coagulation

Question 15

What are the three stages of coagulation?

Answer 15

Stage 1: formation of prothrombinase
Stage 2: Formation of thrombin
Stage 3: Formation of fibrin