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 cancer occurs when errors (mutations) occur in the DNA of skin cells. The mutations cause the cells to grow out of control and form a mass of cancer cells. Basal cells, which produce new skin cells, sit beneath the squamous cells. 2  Melanocytes â which produce melanin, the pigment that gives skin its normal color â are located in the lower part of your epidermis. 3  Melanocytes produce more melanin when you're in the sun to help protect the deeper layers of your skin.