Land affected or burdened by an easement is called a servient estate, while the land or person benefited by the easement is known as the dominant estate.. If the easement benefits a particular piece of land, it is said to be appurtenant to the land.
Vitamin D obtained from sun exposure, food, and supplements is biologically inert and must undergo two hydroxylations in the body for activation. The first occurs in the liver and converts vitamin D to 25-hydroxyvitamin D [25(OH)D], also known as calcidiol.
Vitamin D. Vitamin D is a substance that is created naturally in the body. Sunlight exposure stimulates and increases production of vitamin D in the body naturally. This vitamin works in the digestive tract to absorb calcium into the blood stream from the walls of the duodenum, or first part of the small intestine.Vitamin D also helps maintain normal blood calcium level, which is essential to life and to cardiac function.itamin D. Vitamin D is a substance that is created naturally in the body. Sunlight exposure stimulates and increases production of vitamin D in the body naturally. This vitamin works in the digestive tract to absorb calcium into the blood stream from the walls of the duodenum, or first part of the small intestine.