Clot Retraction

Question 1

Within a few minutes after a clot is formed, it begins to contract and
usually expresses most of the fluid from the clot within 20 to 60 minutes.

The fluid expressed is called ______

Answer 1

serum

Question 2

Clot retraction is the function of _________

Answer 2

Platelets

Question 3

Functions of Clot Retraction

1.Retracted clot (_______) strongly seals injured vessel.
2.It facilitates __________.
3.It prevents _______.

Answer 3

thrombus;
wound healing;
thrombolysis

Question 4

_______ receptors on platelets facilitate clot retraction.

Answer 4

Glycoprotein IIb (2b) /IIIa (3a)

Question 5

________ and ______ accelerate clot retraction

Answer 5

Thrombin; calcium

Question 6

1. Release fibrin-stabilizing factor (XIIIa), which causes more and more
   ________ bonds between adjacent fibrin fibers
2. Activate contractile proteins platelet ________, _______, and ______ molecules.

Answer 6

cross-linking;
thrombosthenin; actin;
myosin