Red blood cells (RBCs)
The body receives new oxygen thanks to red blood cells. It's crucial for your health. Red blood cells resemble doughnuts without a hole because they are spherical with a flat, indented core. Using a blood test, your doctor can determine the size, shape, and overall health of your red blood cells.
Red blood cells contain a protein called hemoglobin. It transports oxygen. Red blood cells help you exhale by removing carbon dioxide from your body and transporting it to your lungs.
The bone marrow is where red blood cells are produced. They normally survive for 120 days before passing away.
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