Red blood cells are concaved (dented) to increase surface area. Their shape also allows them to bend and squeeze into and through those tiny little capillary blood vessels.
If someone asked you to describe a red blood cell, the first thing you should tell them is that red blood cells do not have a nucleus. Red blood cells are elastic. They are normally the shape of a disc, but can be squeezed into a bell shape.
Well, it's red from hemoglobin inside the cells. It looks like a circle with a dent in the middle, sort of like a donut.
Red blood cells contain hemoglobin. These cells are also known as erythrocytes.
As the name says, red blood cells are found in the blood. If there is blood there, there is red blood cells.
The cells in the bloodstream include red blood cells, white blood cells, and platelets. Red blood cells carry oxygen to tissues, white blood cells help fight infections, and platelets aid in blood clotting.
Red blood cells (also called erythrocytes)
Red blood cells because that is what carries oxygen throughout the body
White blood cells have a nucleus and red blood cells don't.
Red and white blood cells.
White blood cells have a nucleus and red blood cells don't.
There are no cells in the red blood cell
Red blood cells transport oxygen in the blood.