Washington (CNN)Donald Trump on Sunday repeatedly slammed his chief presidential rival Sen. Ted Cruz as a total liar as the Texas senator and his allies have claimed in the final stretch to the Iowa caucuses that Trump favors government-run, universal health care.
How is the skin, the largest organ in the body, constructed? The skin has two layers: the upper layer is the epidermis, and the lower layer is the dermis. Below the dermis is the hypodermis, or subcutaneous layer, composed of fat or other connective tissue. The epidermis itself is an epithelium made up of sublayers.The outermost portion consists of many layers of flat, dead, dry epithelial cells called keratinocytes. Clearly this barrier of dead cells needs no blood supply. The waxy surface coating of these cells allows the skin to be waterproof and dry.he epidermis itself is an epithelium made up of sublayers. The outermost portion consists of many layers of flat, dead, dry epithelial cells called keratinocytes. Clearly this barrier of dead cells needs no blood supply. The waxy surface coating of these cells allows the skin to be waterproof and dry.
It has anti-microbial properties. Image caption Cerumen or ear wax secreted by a gland in the ear canal. Ear wax contains waxy oils but much of it is made up of keratinocytes-dead skin cells. The rest of cerumen-to give it its technical name-is a mixture of substances.Between 1,000 to 2,000 glands produce anti-microbial peptides-whilst sebaceous glands close to hair cells add into the mix alcohols, an oily substance called squalene, cholesterol and triglyceride.he rest of cerumen-to give it its technical name-is a mixture of substances. Between 1,000 to 2,000 glands produce anti-microbial peptides-whilst sebaceous glands close to hair cells add into the mix alcohols, an oily substance called squalene, cholesterol and triglyceride.