Types Of Glands - Lesson 246
In this post we would learn about glands of different types. 1. Sebaceous Glands: These glands are located in the corium layer of the skin over the entire body, ;with the exception of the palms (hands) and soles (feet). The oily substance which they secrete is called sebum. Sebum, which contains lipids, lubricates the skin and minimizes water loss. The sebaceous glands which are closely associated with hair follicles, and their ducts open into the hair follicle through which the sebum is released. These sebaceous are influenced by sex hormones, which cause them to hypertrophy at puberty and atrophy in old age. Overproduction of sebum during puberty contributes to blackhead (comedo) formation and acne in some individuals. 2. Sweat Glands: These glands are tiny, coiled glands found on almost all body surfaces (about two million in the body). In the palm of the hand they are very large in number (3000 glands per sq in) and on the sole of the foot. The coiled sweat ...