Question

which of the following is not a function of platelets?
multiple choice
they stick together to form temporary platelet plugs that seal small breaks in injured blood vessels
they inhibit procoagulants.
they internalize and destroy bacteria.
they secrete growth factors that stimulate mitosis in fibroblasts and smooth muscle and thus help to maintain and repair blood vessels.
they initiate the formation of a clot - dissolving enzyme that dissolves blood clots which have outlasted their usefulness.

Explanation:

Platelets are involved in clotting (forming platelet plugs, secreting growth factors for vessel repair, initiating clot - dissolving enzyme formation). Procoagulants are substances that promote clotting, and platelets do not inhibit them. Phagocytosis (internalizing and destroying bacteria) is mainly a function of white blood cells like neutrophils and macrophages, not platelets.

Answer:

They inhibit procoagulants and They internalize and destroy bacteria.