Platelets participate in hemostasis by

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


Answer: C

Anatomy & Physiology

You might also like to view...

The medial end of the clavicle is also known as the ________ end

A) acromial B) sternal C) coracoidal D) manubrial E) scapular

Anatomy & Physiology

Milk and eggs are complete proteins because they contain __________.

a. all the essential fatty acids and amino acids b. all the essential amino acids in sufficient quantities c. more protein than fat d. the recommended intake for vitamin B12

Anatomy & Physiology

Which type of cone responds to short wavelengths of 420 nm?

A. Green cones B. Blue cones C. Red cones

Anatomy & Physiology

How many lumbar vertebrae are in the spinal column?

A. 5 B. 2 C. 12 D. 7

Anatomy & Physiology