Humans shed around 30,000 skin cells every minute, which results in the loss of roughly 43,200,000 each day. While this number may seem high, the epidermis is continuously reproducing cells to replace those that are lost.Continue Reading
According to KidsHealth, the skin consists of three layers, all of which have an important role in protecting the body.
Stem cells in the skin generate cells that can differentiate themselves into surface tissue or hair follicles, as explained by ScienceDaily, and this process occurs roughly every 27 days. The skin, which is the largest organ in the body, is an outer covering of dead cells and four epidermal layers. WebMD explains that the epidermis hosts different types of cells, including keratinocytes, which produce keratin, the major component of skin.Full Answer >
Humans do not have hair on their tongues. Microvilli, which are present on the human tongue, sometimes are confused with hair. Mircovilli are microscopic membrane protrusions on the taste buds.Full Answer >
Humans can live without a spleen, and if the spleen is injured, it is often removed in a procedure called a splenectomy. An injured or bruised spleen can rupture and cause massive internal bleeding. Thus, it is safer to remove the spleen than to risk it bursting.Full Answer >
Humans engage 100 percent of their brains, despite a popular myth that only 10 percent is used. Functional brain imaging studies show that people are capable of activating all parts of their brains when exposed to different contexts. However, not all of the brain is necessarily engaged at all times.Full Answer >