Discuss the difference between muscular endurance and cardiorespiratory endurance
What will be an ideal response?
Answer: Cardiorespiratory endurance is a function of the body's ability to supply muscles with oxygen and fuel, while muscle endurance is the ability of muscles to continue contractions without fatigue. Cardiorespiratory endurance depends on the health of the heart, vasculature (arteries and veins), and lungs in order to pump a sufficient volume of blood through the body, properly distribute the blood to our tissues, and provide for adequate oxygen and carbon dioxide exchange. Muscular endurance depends on the slow twitch muscles having well-developed myoglobin supplies and mitochondria to enable sufficient ATP production.
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The cardiac muscle receives its supply of oxygenated blood by which of the following mechanisms?
A) Absorption of oxygen from the blood returning from the lungs B) Coronary arteries that branch off the aorta C) Coronary veins that branch off the pulmonary vein as it returns oxygenated blood to the heart D) None of the above
The majority of myocardial infarctions are the result of thrombi formation and the percentage is:
A) 10 percent B) 25 percent C) 50 percent D) 90 percent