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Which of the following results in increased stroke volume?

Compared to resting conditions, how does exercise affect blood flow to the heart?

Read the instructions and each question carefully. Identify the choice that best or most specifically completes the statement or answers the question. Each question is worth 2 points (unless otherwise specified) for a total of 100 points.

As exercise progresses from low intensity to high intensity, what is the order in which more muscle fibers are activated to supply the required force?

If we could artificially alter the membrane permeability of pacemaker cells so that potassium efflux was increased compared to normal circumstances, what would be the result?

What is defined as “a decrease in the oxygen-carrying capacity of blood?”

For 2 points of extra credit, finish this sentence: The coolest thing we’ve learned about in class so far is ________. (There is no wrong answer here; just tell me what you think.)

Compared to resting conditions, how does exercise affect blood flow to the skin?

The research lab you work in is doing a study on endurance exercise. You are asked to analyze a muscle biopsy from the leg of an Olympic marathon runner. Because of his training, you expect the majority of the fibers from the runner’s leg to exhibit which set of the following characteristics?

Erythrocytes are synthesized in the ________. This process is triggered by the release of ________ from the ________.