icu i s s u e s & a n s w e r s 2 Pulse Oximeter: A small probe attached to the finger, nose, or ear that helps monitor the oxygen in the blood and the patientâs pulse.
In this Article. Your skin is the largest organ of your body, made up of several different components, including water, protein, lipids, and different minerals and chemicals. Its job is crucial: to protect you from infections and other environmental assaults. The skin also contains nerves that sense cold, heat, pain, pressure, and touch.
Skin is made up of three layers. The outermost is the epidermis. This consists mainly of cells called keratinocytes, made from the tough protein keratin (also the material in hair and nails).Keratinocytes form several layers that constantly grow outwards as the exterior cells die and flake off.It takes roughly five weeks for newly created cells to work their way to the surface.kin is made up of three layers. The outermost is the epidermis. This consists mainly of cells called keratinocytes, made from the tough protein keratin (also the material in hair and nails).