Which valve has 3 cusps?
a. tricuspid
b. pulmonary semilunar
c. aortic semilunar
d. all of the above
Answer: d. all of the above
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Granulation tissue is
A. vascular connective tissue. B. avascular connective tissue. C. vascular epithelial tissue. D. avascular epithelial tissue.
The glial cell that myelinates and insulates axons within the CNS is the
A. astrocyte. B. oligodendrocyte. C. neurolemmocyte. D. ependymal cell. E. microglial cell.
Some researchers think pheromones are important tools in human communication. Pheromones are chemical signals that one individual sends to another. What research questions might be asked by anatomists, and what questions might be asked by physiologists, to determine if pheromones are important to humans?
What will be an ideal response?
Which is NOT true about cofactors involved in enzymatic reactions?
A. They may alter the conformation of the enzyme. B. They may be a metal such as iron. C. They may be a substrate in a catalyzed reaction. D. There must be equal quantities of enzyme and cofactor molecules for a reaction to proceed. E. Only a small number of cofactor molecules may be needed to maintain enzyme activity.