From which primary germ layer is the heart derived?
A. Mesoderm
B. Ectoderm
C. Endoderm
Answer: A
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How many bones make up the skull? (Note: Be sure your answer is a numeral, e.g. "5" vs "five").
Fill in the blank(s) with the appropriate word(s).
The common pathway of coagulation begins with the
A) activation of a clotting factor that converts fibrinogen to fibrin. B) sticking of platelets to damaged tissue. C) activation of a proenzyme exposed to collagen. D) release of tissue factor by a damaged endothelium. E) activating of a clotting factor that converts prothrombin to thrombin.
The ____________________ equation equates the equilibrium potential for an ion with the ion's concentration difference outside and inside the cell
Fill in the blank(s) with correct word
Which of the following biomaterials has the highest specific gravity?
A) Cartilage B) Protein C) Triglyceride D) Squalene