The ________ originate in the pelvic region and usually insert on the femur
A) muscles that move the leg
B) muscles that move the thigh
C) intrinsic muscles of the hand
D) extrinsic muscles that move the foot and toes
E) muscles that move the arm
Answer: B
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The hardest substance in the body is
A) enamel. B) cementum. C) pulp. D) bone. E) dentine.
Amplification during a second-messenger cascade is beneficial because amplification:
A. takes small molecules and makes polymers out of them. B. results in the production of more of the first messenger. C. allows a cell to respond to more different hormones. D. allows small amounts of hormones to produce large responses in target cells.
After fertilization, the first cell division is completed
A) within a few seconds. B) within the hour. C) about 6 hours later. D) in 12 hours. E) about 30 hours later.
The cap (formed from the corpus spongiosum) over the distal end of the penis is the:
A) bulb of the penis. B) crus of the penis. C) root of the penis. D) prepuce (foreskin). E) glans.