The intrinsic pathway of coagulation is activated by the
A) release of tissue factor by a damaged endothelium.
B) conversion of prothrombin to thrombin.
C) activation of proenzyme exposed to collagen.
D) sticking of platelets to damaged tissue.
E) release of heparin from the liver.
C) activation of proenzyme exposed to collagen.
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Answer the following statements true (T) or false (F)
1. Testosterone is produced by the seminiferous tubules. 2. Sperm develop in the walls of the seminiferous tubules. 3. The primary spermatocyte contains only 23 chromosomes. 4. The spermatozoa contain only 23 chromosomes. 5. Both the male and female gametes contain only 23 chromosomes.
______ are numerous folds or finger like projections on apical surfaces of hollow organs
Fill in the blank(s) with the appropriate word(s).
The connective tissue covering around a bundle of fibers (fascicle) within a nerve is called the ________.
Fill in the blank(s) with the appropriate word(s).
The circulatory system is able to provide regulation of other body systems by circulating ________.
A. immunity B. clotting C. blood gases D. hormones