Largest In infants and shrinks with age
Red bone marrow produces platelets as well as RBCs and WBCs.
An increase in RBCs, WBCs, and Platelets (as opposed to pancytopenia, which is a decrease in those)
Blood Composition * Plasma * RBCs * White Blood Cells * Blood Platelets
the principal site of hemopoises is the red bone marrow of the sternum. whereas yellow bone marrow in certain long bones of an adult produces rbcs wbcs and platelets.
Since Bone marrow produces blood cells, if bone marrow is destroyed WBCs, RBCs and platelets will not be formed. However there are no bones and therefore no bone marrow in plants.
RBC's do not have a nucleus to make them more efficient at carrying oxygen and to reduce their size so they can squeeze through small blood vessels and capilaries more effectively. Platelets are essentially cell fragments. They are not cells themselves. They help in the formation of blood clots and are involved in other important hemostatic processes
Red Blood cells (RBCs).
Blood is made up of about 45% solids, platelets, RBCs and WBCs, and 55% of plasma.
Only Red Blood Cells (RBCs) contain hemoglobin. The white cells do not and the platelets (fragments of cells) do not.
Red marrow produces red blood cells (RBCs), white blood cells (WBCs) and cell fragments called platelets. RBCs carry oxygen through out the body, WBCs fight off infections by bacteria and viruses, other "invaders" and platelets are necessary for blood clotting.
If you spin a blood sample in a centrifuge, formed elements sink to the bottom of a test tube because they are denser than plasma. RBCs, representing the bulk of the formed elements, settle to the bottom. WBCs and platelets appear just above RBCs in a thin, grayish layer. So your answer is red blood cells.
Red blood cells are by far the most abundant cells in the blood. There are an average of 2,830,000 RBCs per cubic millimeter (microliter). RBCs account for approximately 40 to 45 percent of the blood. This percentage of blood made up of RBCs is a frequently measured number and is called the hematocrit. The ratio of cells in normal blood is 600 RBCs for each white blood cell and 40 platelets.