NEET PG DENTAL EXAM

Detailed explanation-1: -Blood in the human body is red regardless of how oxygen-rich it is, but the shade of red may vary. The level or amount of oxygen in the blood determines the hue of red. As blood leaves the heart and is oxygen-rich, it is bright red.

Detailed explanation-2: -Human blood is red because of the protein hemoglobin, which contains a red-colored compound called heme that’s crucial for carrying oxygen through your bloodstream.

Detailed explanation-3: -Blood is always red, but the shade of red depends on how much oxygen is in the red blood cells. When you breathe in, you are filling your blood cell with oxygen, and it gives them a very bright red color. As blood travels through your body, it loses the oxygen and takes on carbon dioxide (which you exhale).