The extrinsic pathway of coagulation is activated by
A) the sticking of platelets to damaged tissue.
B) the activation of proenzymes exposed to collagen.
C) the release of tissue factor by damaged endothelium.
D) the release of heparin from the liver.
E) the conversion of prothrombin to thrombin.
C) the release of tissue factor by damaged endothelium.
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Plants kept for aroma, medicinal purposes, or seasoning are called:
a. herbs c. foliage b. flowering d. aromatic
Biofuels can be created from virtually any _____-based materials
a. Carbon c. Silicone b. Nitrogen d. Hydrogen
PROBLEM 3.102
A 18-mm-diameter solid circular shaft is made of a material that is assumed to be elastoplastic with and For a 1.2-m length of the shaft, determine the maximum shearing stress and the angle of twist caused by a 200-N ? m torque.
The most important concern in the design of any stairway is _____
a. safety b. choice of materials c. appearance d. material and labor cost