Bone marrow.
Bone marrow is where blood cells are created. Only long bones (with the "hole" in the center) have bone marrow in them. So leg bones and arm bones make blood cells, but rib bones or skull bones do not. So those short, solid, irregular-shaped bones do not create blood cells.
In adults the principal sites of red cell production, called erythropoiesis, are the marrow spaces of the vertebrae, ribs, breastbone, and pelvis( femur).
In larger bones that contain red and yellow bone marrows (i.e. humerus, femur).
Bones make blood, but only red blood cells and white blood cells.
Marrow
The kind of marrow that produces red blood cells, white blood cells, and platelets is red marrow which is found in the bones.
Flat bones. Like sternum, skull bones, part of the hip bone like ileum.
Red blood cells, in order to store more hemoglobin to carry oxygen, don't have a nucleus that can make repairs. So red blood cells only last, on average, 120 days. Because they constantly need to be reproduced and your bones, believe it or not, are very well vascularized, it seems like a pretty good place to store the marrow to make more red blood cells.
Because you dont have blood vessles in your bones, and you dont bleed out unless your blood vessles are punctured... retard!!
The muscle tissue bones that make blood are called the Cancellous bone.
spears out of animal bones
Blood Cells.
They don't. Bones and blood cells aren't connected. They are just near each other, and serve totally different purposes. Blood cells make up your blood, and bones are just there so you won't be a pancake.
You can make a dinosaur project by going into your backyard and looking for dinosaur bones. When you find the dinosaur bones you can determine what kind of bones they are as a project.
All the blood cells are produced in the bone marrow But not all bones do that. Bones that do make blood cells include bigger longer bones, like the humerus and femur.
Marrow
The kind of marrow that produces red blood cells, white blood cells, and platelets is red marrow which is found in the bones.
Flat bones. Like sternum, skull bones, part of the hip bone like ileum.
A human is created through the process of sexual reproduction, where a sperm cell fertilizes an egg cell to form a zygote. The zygote undergoes multiple cell divisions and developments to eventually form a human embryo and then a fetus, which continues to grow and develop in the uterus until birth.
Bones are made up of minerals, mainly calcium hydroxyapatite.
bone marrow