What is the main difference between the extrinsic and intrinsic pathways in the halting of bleeding?
a. the extrinsic pathway begins outside the bloodstream, whereas the intrinsic pathway begins inside the bloodstream.
b. the extrinsic pathway occurs outside the body, whereas the intrinsic pathway occurs inside the body.
c. the extrinsic pathway occurs after the common pathway, whereas the intrinsic pathway occurs before.
d. the extrinsic pathway occurs during the coagulation phase, whereas the intrinsic pathway occurs during the platelet phase.