3 an organ most affected by a specific hormone, such as the thyroid gland, which is the target organ of thyroid stimulating hormone secreted by the anterior pituitary gland. Endocrinology A specific organ that a particular hormone affects.ense o's (sensory o's) organs that receive stimuli that give rise to sensations, i.e., organs that translate certain forms of energy into nerve impulses that are perceived as special sensations. spiral organ organ of Corti. target organ the organ affected by a particular hormone.
Vitamin D is naturally available in only a few foods, including fatty fish like wild-caught mackerel, salmon and tuna. Vitamin D is also added to milk and to some brands of other dairy products, orange juice, soymilk and cereals. Check the food label to see if vitamin D has been added to a particular product.
Food. Very few foods in nature contain vitamin D. The flesh of fatty fish (such as salmon, tuna, and mackerel) and fish liver oils are among the best sources [ 1, 11 ]. Small amounts of vitamin D are found in beef liver, cheese, and egg yolks.Vitamin D in these foods is primarily in the form of vitamin D 3 and its metabolite 25(OH)D 3 [ 12 ]. Some mushrooms provide vitamin D 2 in variable amounts [ 13, 14 ].Mushrooms with enhanced levels of vitamin D 2 from being exposed to ultraviolet light under controlled conditions are also available.ntake reference values for vitamin D and other nutrients are provided in the Dietary Reference Intakes (DRIs) developed by the Food and Nutrition Board (FNB) at the Institute of Medicine of The National Academies (formerly National Academy of Sciences) [ 1 ].