Plasma is ________ while formed elements are ________.
A. mostly protein; the matrix
B. the liquid portion of blood; the cells
C. a blood gas; blood clots
D. lacking in protein; regulators of blood osmolality
E. the cellular portion of blood; acellular components
Answer: B
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If a urine sample is distinctly yellow in color, which of the following will be true?
A) Its pH is below normal. B) It will have the odor of ammonia. C) It will contain large amounts of urobilin. D) It will contain excess chloride ion. E) It will have a high pH.
Peristalsis
A. is under voluntary control. B. involves the opening and closing of muscular sphincters. C. involves back-and-forth movement for mixing. D. is the alternating contraction of muscle layers in the GI tract wall that propels materials through the tract. E. All of the choices are correct.
Which of the following lab animal species are most commonly used in today's research settings?
a. rabbits c. cats b. mice d. monkeys
A young person loves going to music concerts and frequently stands as close to the stage as they can. They never wear earplugs or any protective earwear. After years of concerts, they become hard-of-hearing and can no longer hear quiet sounds or low talking. What has happened to the concert-goer?
A. They must have used the antibiotic drug streptomycin at the same time as the loud music, which weakened their ear structures and caused them to rupture. B. Their hair cells are permanently damaged and desensitized to loud sounds. C. Their tympanic membrane has hardened from loud sounds. D. The sound vibrations have caused a tumor to develop in their brain, which puts pressure on the vestibulocochlear nerve.