The effects of glucagon are ________ by insulin.
A. enhanced
B. opposed
C. agonized
D. synergized
Answer: B
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In a physiology lab, the students designed an experiment to illustrate how the heart responds to changes in blood pressure. Everyone relaxed and then did a headstand. Which of the following observations are consistent with the change in the function of their hearts?
A. Decreased heart rate B. Increased stroke volume C. Increased heart rate D. Decreased stroke volume E. Both decreased heart rate and increased stroke volume
Dwain is drinking a cup of coffee which has a pH of 5. Compare Dwain's coffee to his friend's coffee which has a pH of 6
What will be an ideal response?
If the arterial blood pressure in the brain is suddenly decreased, the flow through arterioles in the brain will immediately fall and then which of these will occur next?
A. Brain arterioles will constrict to accelerate blood flow through the brain capillaries. B. Brain arterioles will dilate due to a decrease in levels of CO2. C. Blood flow will remain at the new, lower level due to reactive hyperemia. D. Blood flow will rise to levels above normal due to excess O2 levels. E. Blood flow will return toward its original level due to flow autoregulation.
Salt was added to a beaker of distilled water (the water was not stirred). A sample taken from the bottom of the beaker was found to be 20% salt
At the same time, a sample taken from the top of the beaker was found to be 2% salt. After 24 hours A. the difference in the percentage of salt between the top and bottom samples would increase. B. the percentage of salt in top and bottom samples would be approximately equal. C. the samples would still be 2% and 20% respectively. D. the salt would float to the top. E. None of these choices are correct.