5 Questions
What triggers the vascular spasm during hemostasis?
Pain receptors activation
What is the first stage of hemostasis?
Vasoconstriction
What is the function of platelet plug in hemostasis?
Prevent bleeding and stop hemorrhage
What speeds up the formation and propagation of the platelet plug during hemostasis?
Chemicals secreted by activated platelets
What do activated platelets become adhesive to during hemostasis?
Each other & to the endothelium
Study Notes
Hemostasis Process
- Thromboxane A2 and epinephrine trigger vascular spasm during hemostasis
Stages of Hemostasis
- The first stage of hemostasis is vasoconstriction, which reduces blood flow to the injured area
Platelet Plug Function
- The platelet plug, also known as a platelet thrombus, physically seals the wound or injured blood vessel, preventing further blood loss
Platelet Plug Formation
- Thromboxane A2 and collagen exposed at the site of injury speed up the formation and propagation of the platelet plug during hemostasis
Platelet Adhesion
- Activated platelets become adhesive to collagen and von Willebrand factor, leading to platelet aggregation and plug formation
Test your knowledge of hemostasis with this quiz! Explore the stages of hemostasis and understand how the body stops bleeding and prevents hemorrhage in small blood vessels. Brush up on key concepts like vasoconstriction, platelet aggregation, and coagulation.
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