During your assessment of a patient who was shot in the abdomen, you notice a large entrance wound with multiple small puncture wounds surrounding it. This wound pattern is MOST consistent with a:
A. handgun.
B. shotgun.
C. .22-caliber pistol.
D. .357 magnum.
Answer: B. shotgun.
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Spermatogenesis
A. results in four spermatozoa for every primary spermatocyte. B. begins with the mitotic division of spermatogonia. C. is not complete until after an egg is fertilized, which initiates the second meiotic division. D. results in four primary spermatocytes for every spermatogonium. E. takes place completely within the lumen of the seminiferous tubule.
Which of the following represents extreme muscular fatigue when the muscle is incapable of either contracting or relaxing?
A) physiological contracture B) physiological contraction C) psychological fatigue D) synaptic fatigue
The crown of the tooth is covered by ________, the hardest substance in the body
A) cement B) enamel C) bone D) dentin
Which of these is most vulnerable to irreversible damage caused by a very loud noise?
A) Tectorial membrane B) Ossicles C) Cochlear hair cells D) Tympanic membrane E) Fibers of the cochlear nerve