NUTRITION
THE HUMAN BODY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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it has oxygen in it
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it has carbon dioxide in it
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it has wastes in it
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it has food coloring in it
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Detailed explanation-1: -RBCs contain hemoglobin (pronounced: HEE-muh-glow-bin), a protein that carries oxygen. Blood gets its bright red color when hemoglobin picks up oxygen in the lungs. As the blood travels through the body, the hemoglobin releases oxygen to the different body parts.
Detailed explanation-2: -The right ventricle pumps the blood from the right atrium into the lungs to pick up oxygen and remove carbon dioxide. The left atrium receives blood from the lungs. This blood is rich in oxygen. The left ventricle pumps the blood from the left atrium out to the body, supplying all organs with oxygen-rich blood.
Detailed explanation-3: -Oxygen-rich blood flows from the lungs back into the left atrium (LA), or the left upper chamber of the heart, through four pulmonary veins. Oxygen-rich blood then flows through the mitral valve (MV) into the left ventricle (LV), or the left lower chamber.
Detailed explanation-4: -The very function of hemoglobin is to carry oxygen from the lungs to the tissues. So the oxygenatedhemoglobin has this property of absorbing all wavelengths of the visible spectrum except red. Hence the red colour is reflected back and the arteries which carryoxygenated Hemoglobin appears red.