Blood is considered a connective tissue
The bone marrow produces both the red and white blood cells.
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Vitamin B12
The B vitamin that helps to make new cells is called folate. It is also needed for the construction of DNA and is the most needed prenatal vitamin.
Insulin is made in the pancreas, not by blood cells. They have other jobs to do.
Red blood cells (erythrocytes) make up almost half of the blood. They are responsible for carrying oxygen from the lungs to the rest of the body and removing carbon dioxide.
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Vitamin B12
Atoms make up everything. You may be thinking of cells. As far as cells, red blood cells and white blood cells make up blood.
You can become anemic if you have a B12 deficiency. The vitamin is needed to make hemoglobin for your red blood cells.
The element iron is needed to make hemoglobin, which holds the oxygen that the cells carry to all parts of the body.
Blood plasma make up some 70% of the total volume of blood. This is necessary because the plasma is the only fluid portion of the blood, and is needed to dissolve the proteins and to carry the blood cells.
Red blood cells make up about 90% of your blood cells, while white blood cells make up only about 10%.
White Blood Cells make a chemical called Interferon, which white blood cells use to kill bacteria and germs.
Some are: iron (needed to make red blood cells), calcium (needed to make bones and teeth), iodine (needed to make thyroid hormones), potassium and sodium (needed to operate cellular membrane pumps), sulfur (needed to make strong hair), phosphorus (needed for strong teeth), etc.
Vitamin B12
Cells have to do with science because cells are what make up the human body. There are all kinds of cells. A cell has to be magnified 1 million times to see it clearly. Cells are very small and cells also have to do with your blood. They have to do with blood because your blood is all made of red blood cells. There is two kinds of cells that do with blood. They are the white blood cells and the red blood cells.The red blood cells make you breath and let your oxygen flow smoothly, the white blood cells are the most important.
bone marrow produces blood cells. There are three types of blood cells; red blood cells, white blood cells, and platelets.