Vocal folds. The vocal folds, also known commonly as vocal cords or voice reeds, are composed of twin infoldings of mucous membrane stretched horizontally, from back to front, across the larynx. They vibrate, modulating the flow of air being expelled from the lungs during phonation.
Some recent clinical studies show that vitamin D deficiency is closely related to thyroid problems. This article identifies the thyroid problems linked with vitamin D deficiency and discusses how vitamin D supplementation can help treat thyroid disorders.
Confidence votes 52. Vitamin D is a fat soluble vitamin, and functions as a steroid hormone. What steroid hormones do is go in to the nucleus of cells, and alter gene expression, that is turning genes on or off, or simply giving them a nudge in either direction.onfidence votes 52. Vitamin D is a fat soluble vitamin, and functions as a steroid hormone. What steroid hormones do is go in to the nucleus of cells, and alter gene expression, that is turning genes on or off, or simply giving them a nudge in either direction.