Compared to the hand, the foot
A) has more phalanges.
B) has fewer metatarsals than the hand has metacarpals.
C) has a more restricted range of movement.
D) contains arches that help distribute body weight.
E) has the same number of tarsal bones as the hand has carpal bones.
Answer: C
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Peristalsis
A) is a condition wherein the lining of the digestive tract is irritated by the passage of rough fibrous material. B) is a muscular movement pattern that occurs in regions of the digestive tract where the smooth muscle fibers are not arranged in layers. C) is waves of muscular contractions that move along the length of the digestive tract. D) only occurs in the esophagus. E) None of the answers are correct.
Beaker 1 contains water at 23 degrees C. Beaker 2 contains water at 5 degrees C. Beaker 3 contains water at 95 degrees C. A drop of the same blue dye was placed in each beaker. After 10 minutes, the dye in beaker 1 moved 10 mm from the origin, whereas
the dye in beakers 2 and 3 moved 2 mm and 40 mm from the origin, respectively. Which of the following statements properly explains this observation? A) The rate of diffusion does not change as temperature changes. B) The rate of diffusion increases as temperature decreases. C) The rate of diffusion decreases as temperature increases. D) The rate of diffusion increases as temperature increases.
Betsy took a fall and broke her arm, which required that she wear a cast for a prolonged period of time. When she took the cast off, she was alarmed to see that her muscles
A. had undergone hypertrophy. B. seemed to have an increase in blood flow. C. looked the same as they did before the fall. D. had undergone atrophy.
Why would an enlarged prostate gland interfere with urination?
A) It produces thicker prostatic secretions that block the urethra. B) It inhibits urine production. C) It compresses the urethra. D) It inhibits the micturition reflex. E) It develops calcified deposits that block the urethra.