They don't have a hole like a doughnut does, rather it is very thing there. This allows the cell to fold and squeeze itself in very tiny capillaries.
because red blood cells pop out of your bung hole.
The center of bones is called the bone marrow. It is responsible for producing blood cells (red blood cells, white blood cells, and platelets) and storing fat.
more surface area to absorb oxygen
The structures that fit this description are red blood cells, also known as erythrocytes. They are disc-shaped with a pale center and do not contain a nucleus in mammals. Red blood cells are responsible for carrying oxygen to the body's tissues.
Blood cells are formed in the bone marrow, which is located in the center of long bones such as the femur and humerus. The bone marrow contains stem cells that differentiate into various types of blood cells, including red blood cells, white blood cells, and platelets.
The bone marrow is the body's source for blood cells. It is a spongy tissue found in the center of bones where blood cell production, including red blood cells, white blood cells, and platelets, occurs.
it is the control center of a cell
In the center of long bones is the bone marrow, where red blood cells are produced.
Bone marrow is in the center of bone. It produces immature red blood cells.
The tissue in the center of bones that makes blood cells is called bone marrow. It is a soft, spongy tissue that produces red blood cells, white blood cells, and platelets through a process called hematopoiesis.
Red blood cells contain hemoglobin. These cells are also known as erythrocytes.
1) Frog's red blood cells contain a nucleus that carries all the genetic information needed to make new cells by replication. Human red blood cells contain no nuclei because they reproduce differently than frog. 2) We human have platelets in our blood but frogs do not have them.