Which of these capacities is NOT correctly defined?
A. vital capacity = inspiratory reserve + tidal volume + expiratory reserve
B. inspiratory capacity = tidal volume + inspiratory reserve volume
C. functional residual capacity = expiratory reserve + residual volume + inspiratory reserve
D. total lung capacity = inspiratory reserve + expiratory reserve + tidal volume + residual volume
Ans: C. functional residual capacity = expiratory reserve + residual volume + inspiratory reserve
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What would be the effect of a genetic defect in a clotting factor that normally is part of the conversion of fibrinogen into fibrin?
A. Platelet-derived growth factor would be lacking, and smooth muscle in the walls of broken blood vessels would not be repaired. B. A clot that seals the break in a blood vessel would not form. C. Plasmin would not be produced, and the clot would remain on the wall of the blood vessel without dissolving. D. Platelets would not adhere to one another to form the platelet plug. E. Platelets would not be able to release serotonin.
A paramedic is called to treat a patient who is severely dehydrated after an excessive misuse of diuretics. She has an increased body temperature, flushed skin, and dry mucous membranes. The patient is most likely experiencing:
a. Hypernatremic dehydration b. Hyponatremic dehydration c. Isotonic dehydration d. Neutronatremic dehydration
Maximum voluntary ventilation (MVV) is the greatest amount of air that can be
A. expired in 1 second. B. held within the lungs for over 30 seconds. C. inspired in one breath (regardless of dead space). D. inspired and then expelled in 1 minute.
When the nerve to a muscle is destroyed, ________
A) the muscle can continue to contract normally or it can continue to contract weakly B) the muscle will no longer contract C) the muscle will continue to contract normally D) the muscle will continue to contract weakly