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There is a complex protein called hemoglobin (probably haemoglobin, for British eyes).
It is the oxygen carrying molecule carried by the Red Blood Cells (RBCs), which are the main component of the blood.
Typically, veins & arteries will carry a slightly different color of red: Brick Red for the low-oxygenated veinous blood, and a brighter red for the highly-oxygenated arterial blood.
Pulse Oximeters (the red glowing finger prob used in hospitals) can measure the amount of oxygen in a patient's blood by calculating the amount of bright red blood compared to dark red blood. It uses a small laser (the red light).
What else can I help you with?
What is a blood red?
Blood red is a vivid deep red colour, similar to the colour of blood.
What is the color of the gullet?
The colour of the gullet is red as our blood is red in colour.
How whale have blue blood?
The colour of all whales' blood is red, not blue.
What is the actual colour of a red blood cell?
Red.
What colour is the blood cell?
red blood cells are red and white blood cells are white
What colour is a fez?
Blood red.
What colour is beetles blood?
red
What is the colour of the blood of earthworm?
red
What is the colour of blood in capillary?
red
What colour is tortoise blood?
red?
Colour blood colour of tiger?
The blood color of a tiger is red. Like all mammals, tigers have red blood. The color of blood is determined by the presence of hemoglobin, which is a protein that carries oxygen. Hemoglobin is red because it contains iron.
What cells have hemoglobin in the body?
Red blood cells. They give red colour to your blood.
