Asked by Steven Bivona on Jul 21, 2024
Verified
During platelet plug formation, platelets release ________ and endothelial cells release ________, which lead to vasoconstriction.
A) endothelin; thromboxane
B) erythropoietin; thromboxane
C) thromboxane; histamine
D) histamine; heparin
E) thromboxane; endothelin
Platelet Plug
A mass formed by platelets that accumulates at a site of blood vessel injury to help stop bleeding.
Vasoconstriction
The constriction of blood vessels that elevates blood pressure and diminishes blood circulation to specific regions.
Thromboxane
Specific class of physiologically active fatty acid derivatives present in many tissues.
- Understand the physiological basis and phases of hemostasis, including platelet plug formation and coagulation.
Verified Answer
ST
Sharay TaylorJul 22, 2024
Final Answer :
E
Explanation :
During platelet plug formation, platelets release thromboxane, which aids in vasoconstriction and platelet aggregation, while endothelial cells release endothelin, a potent vasoconstrictor.
Learning Objectives
- Understand the physiological basis and phases of hemostasis, including platelet plug formation and coagulation.