The three layers skin are the fat layer, the dermis and the epidermis. The topmost layer is the epidermis, and the bottom layer is the fat layer, also called the subcutis.Know More
The fatty layer serves as insulation, protection and energy storage for the body. It consists of fat cells in a matrix of fibrous tissue.
The dermis features mainly tissues called collagen, elastin and fibrillin. Nerve endings, sweat glands, hair follicles and blood vessels also live in the dermis.
The epidermis is a thin layer composed mainly of keratinocytes. It protects the body from foreign objects, such as bacteria, viruses and other substances. In the epidermis lies cells called Langerhans, which play a part in protecting the body against infection. Melanocytes also inhabit the epidermis. These cells secrete melanin, a pigment that protects the body from UV rays and gives skin its color.Learn more about Human Anatomy
Fingerprints are formed in the womb when the basal layer of skin grows faster than the layers above and below it, stressing it and causing it to wrinkle. The variations of whorls, arches and loops this creates are unique to each individual, and are retained throughout life. Scientists think that genes play a role, but the exact patterns of fingerprints are not shared even by identical twins.Full Answer >
A tickle is the human body's involuntary response to a foreign stimulus contacting the skin. There is no conclusive evidence to suggest that this response is not present in everyone.Full Answer >
Meissner's corpuscles, also known as tactile corpuscles, are nerve endings that are responsible for detecting a light touch to the skin. The are considered a type of mechanoreceptor since they are responsive to physical pressure. Meissner's corpuscles have the lowest sensitivity threshold of any type of mechanoreceptor; they can sense vibrations with frequencies as low as 10 Hertz.Full Answer >
The five functions of the skin are protection, regulation of heat, secretion, excretion and absorption, according to Skin Genetix. There are two sections of the skin, the epidermis and the dermis, each of which aids in the functions in a different way.Full Answer >