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Because of the presence of hemoglobin in our blood.
Human blood is red only when it is oxygenated, meaning oxygen molecules have bound to hemoglobin in the red blood cells after the blood passed through lung tissues. Blood where no oxygen is bound to the hemoglobin will be blue in color.
Inside the body, blood leaving the lungs is bright red because it is freshly oxygenated. Blood returning from various parts of the body to the lungs will be blue because it is is devoid of oxygen.
Blood from a cut or wound is always red because oxygen in the air binds with the hemoglobin.
Wiki User
∙ 12y ago
Wiki User
∙ 15y agoHuman blood is red due to the presence of oxygen-carrying, iron-rich hemoglobin in the red blood cells.
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What is the color of vampires who feast on human blood?
Red! Any vampire that feasts on human blood has red eyes!
What is the eye color of vampires who feast on human blood?
Red! Any vampire that feasts on human blood has red eyes!
What is the shape of the chief cells of human red blood cells?
The shape of the human red blood cells is that it is biconcave in shape.
What is the Difference between human blood from animal blood?
It depends on what kind of animal it is. If it is an amphibian, the red blood cells will have a nucleus. Human red blood cells do not have nuclei.
How do the diameter and concentration of bovine red blood cells compare to human red blood cells?
bovine red blood cells are smaller and more concentrated than human rbc
Where Red blood cell in human body?
Red blood cells in the human body are normally contained within the blood vessels. They may be stored in the spleen, and are produced in the red marrow.
What is the pH of a red blood cell?
human red blood cell has a pH of 7.4
What cells can you find in human blood?
You can find red blood cells, white blood cells, and platelets in human blood.
Why is the human body not blue?
because the human blood is red.
What organelle is found in frog's blood cells that's not found in human blood cells?
Frog red blood cells contain a nucleus, whereas human red blood cells do not.
What is the only cell in the human body that doesn't have a nucleus?
Mature red blood cells are the only human cells that do not have a nucleus. sorry to do this but that's not the answer but i don't know it
Where in a human do you find red blood cells?
you may find red blood cells in veins
