they come from the bone marrow
Red bone marrow produces platelets as well as RBCs and WBCs.
red blood cells and white blood cells and platelets
I can partly answer this question: Basophils, which are granular leukocytes, are a part of our bodies natural makeup, they produce heparin (an anticoagulant), histimines (an inflammatory substance), and serotonin (a vasoconstictor).
Your mother
myeloblast
Largest In infants and shrinks with age
Bone marrow
bone marrow
The kind of marrow that produces red blood cells, white blood cells, and platelets is red marrow which is found in the bones.
Bone marrow
On average, the human body produces about 150 billion to 400 billion platelets each day. These platelets are produced in the bone marrow from megakaryocytes, which are large cells that fragment to release platelets into the bloodstream. The production rate can vary based on factors such as age, health, and physiological conditions.
The organ that engages in erythropoiesis in the fetus, produces lymphocytes in the adult, and stores platelets is the spleen. During fetal development, the spleen plays a crucial role in producing red blood cells. In adults, it is primarily involved in the production of lymphocytes and serves as a reservoir for platelets, helping to regulate their levels in the bloodstream.