A 30-year-old male experienced a crushing injury when his arm was trapped between the back of a truck and a loading dock. Upon your arrival, the man's arm has been freed. Your assessment reveals that his arm is obviously deformed and swollen and is cold and pale. Further assessment reveals an absent radial pulse. You should be MOST concerned that this patient has:
A. internal hemorrhage.
B. compartment syndrome.
C. a severe closed fracture.
D. damage to the radial nerve.
Answer: B. compartment syndrome.
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Which is true regarding the process of meiosis?
A. Most growth in the body is accomplished through meiosis. B. Meiosis results in identical sex cells. C. Meiosis forms haploid daughter cells from a diploid cell. D. Meiosis begins in a haploid state and concludes in the diploid condition. E. Meiosis is represented by the notation: n ? 2n.
Which alveolar cells engulf foreign particles and pathogens inhaled into the lungs?
A. alveolar type I cells B. alveolar macrophages C. goblet cells D. alveolar type II cells
What genetic disorder is the inability to produce normal hemoglobin?
A. albinism B. sickle-cell disease C. hemophilia D. Down syndrome E. achondroplasia
The _________________ in a muscle fiber stores calcium in between contractions.
Fill in the blank(s) with correct word.