GENERAL ANATOMY
CARDIOVASCULAR SYSTEM
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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70%
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30%
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Detailed explanation-1: -What do ejection fraction numbers mean? 55 to 70% – Normal heart function. 40 to 55% – Below normal heart function. Can indicate previous heart damage from heart attack or cardiomyopathy. Higher than 75% – Can indicate a heart condition like hypertrophic cardiomyopathy, a common cause of sudden cardiac arrest.
Detailed explanation-2: -The heart has four chambers: two atria and two ventricles. The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle. The right ventricle pumps the oxygen-poor blood to the lungs. The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle.
Detailed explanation-3: -The normal heart is a strong, hard-working pump made of muscle tissue. It’s about the size of a person’s fist. The heart has four chambers. The upper two chambers are the atria, and the lower two are the ventricles (Figure A).
Detailed explanation-4: -Each chamber in the heart can hold around 70 ml of blood since there are 4 chambers in the human heart, it can hold around 280 ml of blood.