Platelets Participate in Hemostasis by

Multiple Choice

Platelets participate in hemostasis by

A) aggregating to form a plug and manufacturing fibrinogen.
B) secreting nitric oxide and releasing chemicals that promote vasoconstriction.
C) secreting prostacyclin,which prevents platelet aggregation on blood vessel endothelium.
D) aggregating to form a plug and releasing chemicals that promote vasoconstriction.
E) secreting tissue plasminogen activator (t-PA) whenever they come into contact with collagen.