PHYSIOLOGY
CARDIOVASCULAR PHYSIOLOGY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
True
|
|
|
False
|
|
|
Either A or B
|
|
|
None of the above
|
Detailed explanation-1: -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). This oxygen-low blood is a darker shade of red.
Detailed explanation-2: -Blood is always red. Every molecule of hemoglobin-a protein in red blood cells that carries oxygen-contains four atoms of iron, which reflect red light and so give our blood the red color. The shade of red changes depending on the level of oxygen in the blood.
Detailed explanation-3: -Arteries (in red) carry oxygen rich blood from the left side of the heart to the tissues and organs. After oxygen leaves the blood and moves into the tissues, the level of oxygen in the blood becomes low. The veins (in blue) carry blood that has a low level of oxygen back to the right side of the heart.