In addition to its importance for animal cell structure, cholesterol also serves as a precursor for the biosynthesis of steroid hormones, bile acid, and vitamin D. Cholesterol is the principal sterol synthesized by all animals. In vertebrates, hepatic cells typically produce the greatest amounts.
The name Dougal is of Scottish origin. The meaning of Dougal is dark stranger. Dougal is generally used as a boy's name. It consists of 6 letters and 2 syllables and is pronounced Dou-gal.
For other uses, see Loneliness (disambiguation). Loneliness is a complex and usually unpleasant emotional response to isolation or lack of companionship. Loneliness typically includes anxious feelings about a lack of connection or communication with other beings, both in the present and extending into the future. As such, loneliness can be felt even when surrounded by other people.