Top Definition. bench. To benchpress. This invloves lying horizontally, with free barbell perpendicular to one's body. The target muscles are the pectorals, although the arms are also givena workout. The closer together one's hands, the more work is done by the triceps. The further apart, the more work is done by the biceps.
In humans, it is the largest organ of the integumentary system. The skin has multiple layers of ectodermal tissue and guards the underlying muscles, bones, ligaments and internal organs. Human skin is similar to that of most other mammals, except that it is not protected by a fur.he epidermis contains no blood vessels, and is nourished by diffusion from the dermis. The main type of cells which make up the epidermis are keratinocytes, melanocytes, Langerhans cells and Merkels cells. The epidermis helps the skin to regulate body temperature.
Skin stem cells. In everyday life your skin has to cope with a lot of wear and tear. For example, it is exposed to chemicals like soap and to physical stresses such as friction with your clothes or exposure to sunlight.The epidermis and skin appendages need to be renewed constantly to keep your skin in good condition.o far, scientists have identified several different types of skin stem cell: 1  Epidermal stem cells are responsible for everyday regeneration of the different layers of the epidermis. 2  These stem cells are found in the basal layer of the epidermis.