History of Cardiovascular Physiology, Dr. D. Penney

Misconceptions about some Integrative Mechanisms:

  • Hyperventilation produces dizziness because too much oxygen reaches the brain.

  • Cardiovascular changes during diving are responses to increased hydrostatic (i.e. water) pressure.

  • Blood volume is primarily affected by drinking.

  • Gravity has no influence on the cardiovascular system.

  • The Valsalva maneuver is a military exercise.

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