Discuss changes in the cardiovascular and pulmonary systems that result from conditioning for exercise.
What will be an ideal response?
Pulmonary ventilation rate increases immediately with onset of exercise, due to feedforward responses that
originate with muscle and joint proprioceptors. These receptors send signals to the motor cortex, which affects the
respiratory control center. The cardiovascular control center is also affected, resulting in generalized sympathetic
discharge, which causes widespread vasoconstriction, increasing systemic blood pressure. Other effects include
increased cardiac output and vasodilation in vessels of skeletal muscle to increase blood flow.
You might also like to view...
Which of the following is the major positive ion outside cells?
A) hydrogen B) magnesium C) sodium D) potassium
Chronic inhalation of fine particles that reach the alveoli leads to ________ lung disease.
A) congestive B) restrictive C) obstructive D) fibrotic E) compliant
Which of the following does not occur as a compensation for hemorrhage?
a. shift of fluid from the interstitial fluid into the plasma. b. reduced urinary output. c. increased capillary permeability. d. increased cardiac output. e. increased synthesis of plasma proteins.
Deposition of material in the walls of arteries to form plaques is called
A. atherosclerosis. B. varicose veins. C. thrombosis. D. pulmonary blockage. E. phlebitis.