Cytokines that make a cell and its neighbors resistant to virus infection are called
A) complement.
B) interferons.
C) interleukins.
D) immunoglobulins.
E) transferrins.
B
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What happens to blood pressure during exercise?
A. It increases slightly; some cardiovascular changes promote an increase while others promote a decrease. B. It decreases greatly because vasodilation in skeletal muscles and heart tissue more than offsets factors that increase blood pressure. C. It decreases slightly; some cardiovascular changes promote a decrease while others promote an increase. D. It increases greatly because cardiac output increases and vasoconstriction in inactive organs raises blood pressure directly.
Multiple sclerosis is an autoimmune disease in which the body's defense system erroneously attacks the myelin sheath surrounding myelinated nerve fibers
Indicate whether the statement is true or false
APGAR scores are used to
A. determine the developmental age of the infant. B. assess a newborn's physiological condition. C. evaluate a newborn's weight. D. measure the infant. E. measure a newborn's genetic state.
The main disadvantage of using a scoop stretcher to transfer a patient to a long backboard is:
A) inability to conduct a visual exam of the back for injuries. B) patient discomfort due the cold metal frame of the scoop. C) unnecessary patient movement and the risk for further harm. D) inability to palpate the spinal vertebrae for gross deformities.