Vitamin D?
No. Vitamin D is not manufactured, rather, it is chemically altered by UV rays on the skin, and thereby, capable of utilization by the liver, and then by the kidneys; the organ responsible for maintenance of calcium levels. Interestingly enough, however, the active form of vitamin D is plentiful in the western diet, and only about 5-10% of vitamin D is actually utilized by the UV ray induced alteration from the skin.
The skin produces many substances, however, most substances are consider paracrine (affecting neighboring cells) rather than endocrine (affecting distant organ systems). More commonly, hormones or endocrine substances, affect the skin, causing pathologic states. An example of paracrine:
- Inflammatory markers- Sites of trauma, or areas of potential infection; cells within the skin induce several chemicals that increase the migration of specialized cells of the immune system, as well as cells from the vasculature (platelts) and other cells that are responsible for healing
- Endocrine: Insulin (acanthosis nigricans) immune complexes (vitiligo, bullae)
vitamin d ( it actually produces modified cholesterol molecules that synthesize the vitamin D produced by the sun)
Vitamin D is manufactured in the skin when the skin is exposed to the sunshine. This vitamin D is then used by the body to help with the deposition of of calcium in the bones.
Vitamin D, from sunlight.
Vitamin D
Vitamin D!
vitamin D.
calcium
calcium is the secret ingredient which stimulates bone growth.
Bone Marrow. It is red and is very important to your body!
Calcium hydroxyapatite is the substance most commonly found in bones. Almost 50 % bone is made of this salt and rest is organic material, mostly collagen fibers. Bones are porous so light weight and Calcium salt gives it hardness and organic fibers gives it flexibility like cement and steel rods in cement concrete.
Bones are living tissue, like skin or liver. There are many, many living cells within a bone that are devoted to laying down and also to removing the calcium that provides the physical support that makes bone stiff and strong. If your diet is low in calcium, your body will take calcium out of the bones to use it for essential work elsewhere. If you don't use your bones, by exercising, the cells in the bone will take calcium out of the bone in a "use it or loose it" sort of feedback loop. When bones loose calcium, they are more likely to break or compress. So, when your bones are strong it means your diet and exercise are good and your bones will be much less likely to break or hurt.
Yes. Calcium oxide is a compound which is a type of pure substance.
calcium is an element, so it is the pure substance.. it is a grey/silver. calcium is an element, so it is the pure substance.. it is a grey/silver.
Calcium is a natural chemical element, a solid metal.
calcium carbonate is really pointlees
calcitonin
The answer is calcitonin.
Calcium Selenide
The main substance in limestone is calcium carbonate.
Hydroxylapatite is the mineral substance in bone. It is a calcium compound.
Calcium is an element and therefore a pure substance.
pure substance...!
calcium