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.
Red blood cells because that is what carries oxygen throughout the body
red blood cells
Red blood cells contain hemoglobin, but white blood cells do not
As the name says, red blood cells are found in the blood. If there is blood there, there is red blood cells.
The old red blood cells get replaced by the newly formed red blood cells.
Red blood cells, white blood cells, platelets and liquid plasma.Red blood cells, white blood cells, platelets and liquid plasma.
Red blood cells (also called erythrocytes)
White blood cells have a nucleus and red blood cells don't.
Red and white blood cells.