Hemopoiesis
Blood cells are formed from haematopoietic stem cells by the process of haematopoiesis.
All blood cells are formed through a process called hematopoiesis, which occurs in the bone marrow. Hematopoietic stem cells located in the bone marrow give rise to all types of blood cells including red blood cells, white blood cells, and platelets through a series of differentiation steps. This process is tightly regulated to ensure a balanced production of blood cells to maintain homeostasis in the body.
Hematopoiesis
Of the formed elements in blood, only the white blood cells have chromosomes. Platelets are cell fragments, not cells, and red blood cells lose their chromosome-containing nuclei during the maturation process.
Thrombocytes, or platelets, are the formed elements of the blood that aren't and never were true cells. They are cell fragments. The erythrocytes (red blood cells) are originally cells with a typical nucleus, but they lose the nucleus in the process of development.
White blood cells are the only formed element of blood that have nuclei. The formed elements of blood are red blood cells (erythrocytes), white blood cells (leukocytes), and platelets (thrombocytes). Red blood cells lose their nuclei during the maturation process. Platelets are cell fragments that do not have nuclei.white blood cells
The process by which the formed elements of the blood develop is called hematopoiesis. This complex process occurs primarily in the bone marrow and involves the differentiation of multipotent stem cells into various blood cell lineages, including red blood cells, white blood cells, and platelets. Hematopoiesis is crucial for maintaining adequate levels of these cells in circulation, ensuring proper oxygen transport, immune response, and blood clotting.
Hematopoiesis is the process by which new blood cells are formed in the bone marrow. This includes the production of various types of blood cells, such as red blood cells, white blood cells, and platelets. Hematopoietic stem cells give rise to all these different types of blood cells through a series of differentiation steps.
Erythrocytes or red blood cells are formed in the bone marrow from precursor cells called erythroblasts which themselves are formed from pleuripotential stem cells - the mother of all blood cells. Along the way, erythroblasts take various forms/ stages until they differentiate into mature erythrocytes.
Filtration is formed within the glomerulus by the process of ultrafiltration. This process involves blood pressure forcing water, ions, and smaller molecules to be filtered out of the blood and into the renal tubules. Larger molecules, like proteins and blood cells, are retained in the blood.
The blood cells of mammals and cordates are not true cells they are formed from other cells... so they are called formed elemements...
Red blood cells are formed continuously in the bone marrow throughout a person's life. The process is called erythropoiesis and it is regulated by hormones such as erythropoietin, which is produced in response to low oxygen levels in the body.