QuestionSBA
QuestionChoice
Plasmin is an enzyme which breaks down fibrin mesh into fibrin fragments such as D-dimer.
10024391
b
Plasmin
QuestionChoice
Thrombin is a factor in the clotting cascade. It activates receptors on platelets to increase platelet aggregation and the release of von Willebrand factor from endothelial cells. It also converts fibrinogen into fibrin.
10024393
d
Thrombin
QuestionChoice
Thromboxane A2 (TXA2) is released by activated platelets to cause platelet aggregation and vasoconstriction through TXA2 receptors.
10024390
a
Thromboxane A2
QuestionChoice
Tissue plasminogen activator is an enzyme released from endothelial cells which converts the inactive soluble circulating protein plasminogen into a potent proteolytic enzyme called plasmin.
10024394
e
Tissue plasminogen activator (tPA)
QuestionChoice
Fibrinogen is a plasma protein which is converted to fibrin (by thrombin) to stabilise blood clots.
10024392
c
Fibrinogen
Concept
Chapter
2693
5775
Structure and physiology of blood vessels
Topic
134
Cardiology
17276
A 37-year-old male presents to the emergency department after a motorcycle accident which has caused the rupture of his spleen.

During a tissue bleed, the clotting cascade is initiated. This also involves local vasoconstriction to prevent blood loss.

Which of the following molecules is involved in this vasoconstriction?
a