A variety of abbreviations exist to designate the applicable certifications, specialties and education of nurse practitioners. General Abbreviation The general abbreviation for nurse practitioners is NP. A general nurse practitioner has completed at least a bachelor degree and has a license to work as a registered nurse (RN) in her home state. Additionally, she has at least two years experience practicing as an RN and has completed a masterâs degree and additional training.
Our body creates most of our vitamin D from direct sunlight on our skin. We also get vitamin D from some foods â including eggs, meat and oily fish such as salmon, mackerel and sardines.
The kidneys and liver can make hormones that stimulate other organs. When sunlight strikes the skin, the skin makes a chemical that the liver changes into a form of vitamin D. This vitamin D moves from the liver to the kidneys courtesy of the bloodstream. In the kidneys it becomes a hormone called calcitriol.