Compare the hearts of a trained athlete and a nonathlete
The athlete's heart will be larger and will have a higher resting stroke volume and a lower resting heart rate. During maximum activity, stroke volume will be much greater for the athlete, and cardiac output of the athlete may approach 30 liters/minute compared to 20 liters/minute of the nonathlete. Maximum heart rates will be about the same despite the much larger cardiac output, due to the larger stroke volume.
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________ transport is required to move a substance across a membrane against a concentration gradient.
Fill in the blank(s) with the appropriate word(s).
Asystole is the total absence of ventricular electrical activity. Explain why defibrillation would not be effective in this situation
What will be an ideal response
The hormone that helps regulate blood sodium concentration, by stimulating Na+ conservation in the kidneys is:
What will be an ideal response?
Which is a FALSE statement about the cerebrospinal fluid?
A. It has the same composition as blood plasma. B. It acts as a cushion for the brain and spinal cord. C. It is secreted by cells lining the ventricles of the brain. D. It circulates within and between brain ventricles and surrounds the spinal cord. E. It is in diffusion equilibrium with the extracellular fluid of the central nervous system.