CLINICAL MEDICINE

Detailed explanation-1: -The epidermis, the outermost layer of the skin, is subdivided into the stratum corneum, stratum lucidum, stratum granulosum, and stratum basale.

Detailed explanation-2: -The skin is the largest organ of your body. It acts as a barrier between invaders (pathogens) and your body.

Detailed explanation-3: -The skin acts as an external barrier to bacteria, preventing infection and protecting the internal organs. The skin also protects the body from ultraviolet radiation using the pigment barrier formed from melanocyte cells found in the top of the papillary dermis and a protein layer found in the epidermis.

Detailed explanation-4: -The immune system is the body’s defense against infections. The immune (ih-MYOON) system attacks germs and helps keep us healthy.

Detailed explanation-5: -External defense systems include your skin, tears, mucus, saliva, stomach acid, cilia (small hairs) and helpful bacteria in your bowel. Your skin provides a physical block to stop bacteria and viruses from finding their way straight into your blood.