The rectus abdominis is a ________ muscle, while the rectus femoris is a ________ muscle
A) convergent; unipennate
B) parallel; bipennate
C) multipennate; convergent
D) fusiform; parallel
E) bipennate; parallel
B
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Which statement about the plasma membrane is not true?
a. It serves as a mechanical barrier to hold in the contents of the cell. b. It selectively controls movement of molecules between the ECF and the cytoplasm. c. It is the barrier that surrounds the blood vessels and separates the blood plasma from the interstitial fluid. d. It contains proteins that provides for various membrane functions. e. It consists mostly of lipids and proteins.
A woman with a typical 28-day menstrual cycle is most likely to become pregnant from sexual intercourse occurring on days:
A) 1-5. B) 5-16. C) 9-14. D) 12-16. E) 14-20.
When atoms of elements on the left side of the periodic table ionize, they tend to
A. add neutrons and therefore become megaions. B. gain protons and therefore become anions. C. gain electrons and therefore become anions. D. lose electrons and therefore become cations. E. lose protons and therefore become cations.
The hormone that lowers the calcium and phosphate ion concentration of the blood by inhibiting the release of calcium phosphate ions from the bones and increasing the excretion of these ions by the kidneys is
A. vasopressin B. serotonin C. melatonin D. calcitonin