Conditions around metabolically active tissues do what to the oxyhemoglobin dissociation curve?
A. Decrease the slope
B. Shift it right
C. Shift it left
D. Increase the slope
Answer: B
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Muscles developing tension while lengthening are performing ____ contractions
a. concentric b. eccentric c. isometric d. fatiguing e. oscillating
When an object is more than 20 feet from the eyes, ________.
A. there is tension on the zonular fibers of the suspensory ligament B. the ciliary muscle relaxes C. the lens is pulled and flattened D. All of the choices are correct.
If the amount of sodium in the blood decreases, what would a negative feedback control mechanism be expected to do?
A. Decrease the amount of sodium in the blood. B. Increase the amount of sodium in the blood. C. Leave the amount of sodium unchanged. D. Change the set point for sodium. E. Inhibit the ingestion of more sodium.
K+ diffusing out of the cell has a _____ feedback effect on the initial polarization
Fill in the blank(s) with the appropriate word(s).