Sunlight and subcutaneous fat.
Skin, hair, gland, and nails. Provides protection, prevents water loss, synthesizes vitamin D, site receptors, and helps regulate body temperature through sweat evaporation.
Answer Is Digestive! -Philippe D Was Here :D, God Of Smartness 181^^^
Your skin synthesizes vitamin D, which assists with calcium absorption. This calcium is part of the bone structure.
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no
You do not use it consciously, but your body uses it (from sunlight) to generate vitamin D.
without vitamin D, your body can not create calcium for your bones. in the winter you must have at least 10 min. of sun light so your body can make the required calcium. vit. D can also be stored for later use.
Smooth endoplasmic reticulum is one of them p63 human biology Michael d Johnson 4th ed
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it help with fatigue, and also works well with Viagra
stop cheating on your health exam :D and its body mass index l
The only way to reduce vitamin D in the body is to stop intake of vitamin D.