The intrinsic pathway of coagulation is activated by the
A) sticking of platelets to each other.
B) activation of Factor XII by platelet factors.
C) release of tissue factor (Factor III) by damaged endothelium.
D) release of heparin from the liver.
E) conversion of prothrombin to thrombin.
B
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Thyroid-stimulating hormone is produced by the thyroid gland
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Deepening of the voice, broadening of the shoulders, and growth of facial and body hair are secondary sexual characteristics that occur in
Fill in the blank(s) with the appropriate word(s)
In active transport, the affinity of any given binding site for the molecule to be transported changes as the site goes from facing one side of the membrane to facing the other side
Indicate whether the statement is true or false.
Which of the following statements concerning sutures is false?
A. They may become completely immovable in adults. B. The opposing bones in the joint interdigitate for stability. C. The tissue between the bones is hyaline cartilage. D. The periosteum of adjacent bones is continuous over the joint. E. Membranes, called fontanels, are present in some sutures at birth.