ANATOMY

GENERAL ANATOMY

CARDIOVASCULAR SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Why is coronary circulation necessary?
A
because blood needs to be pushed throughout the entire body
B
because the heart itself needs oxygenated blood
C
because the head requires nourishment
D
because the brain needs oxygenated blood
Explanation: 

Detailed explanation-1: -The function of the coronary arteries and their branches is to supply your heart with blood. Your heart muscles need the oxygen and nutrients in blood so they can pump blood through your heart and the rest of your body.

Detailed explanation-2: -Coronary arteries supply blood to the heart muscle. Like all other tissues in the body, the heart muscle needs oxygen-rich blood to function. Also, oxygen-depleted blood must be carried away. The coronary arteries wrap around the outside of the heart.

Detailed explanation-3: -The heart is highly metabolically active and boasts the highest oxygen consumption by mass of any organ. This demand for oxygen is met by the coronary circulation, which is responsible for delivering blood to the myocardium and represents approximately 5% of cardiac output.

Detailed explanation-4: -Supplying oxygen to the heart’s muscle Like other muscles in the body, your heart needs blood to get oxygen and nutrients. Your coronary arteries supply blood to your heart. These arteries branch off from the aorta so that oxygen-rich blood is delivered to your heart as well as the rest of your body.

Detailed explanation-5: -The coronary arteries are responsible for carrying nutrient-rich, oxygenated blood from the left ventricle to the myocardium; while the coronary veins take nutrient – poor deoxygenated blood away from the myocardium and to the right atrium.

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