Do We Shed? My project is about comparing arthropods and humans, and seeing if they shed.
+Information On Humans Shedding+
+The human skin is constantly renewing itself by growing new cells at the lower layer. The human skin sheds old skin cells from the surface. The average person might shed 40 pounds of skin in a lifetime.
+The tiny flakes that fall from human skin drift around in the air eventually settles as dust. Each person sheds about a million of these slakes every 40 minutes. Most of the dust that collects in houses is actually dead skin from humans and animals.
+Most people lose an entire outer layer of skin cells every month. We shed dead skin cells every day. Millions of skin cells float off your skin everyday, when you scratch a itchy spot on your skin. The dead skin cells shed skin surface replaced by new cells from the base of the Epidermis, region also produces skin pigment, Melanin.
+Some skin cells move up through layers as they get older, making them tougher. When skin cells die, we shed. Our skin is constantly flaking away, taking dirt and germs with it.
+A piece of skin half a inch square has over 3 million cells, 3 feet of blood vessels, 80 sweat glands, and about 35 nerve-endings. Surface cells gradually wear away (shed ) but are replaced by new cells from below. Each cell lasts about 4 weeks. The dead layer is about 25 cells deep.
+The skin is the bodies biggest organ. An adults skin weighs 5 to 8 pounds ( about 3 to 4 kilograms ). Sunscreen protects our skin from getting skin cancer when you get older. Some skin cells move up through layers as they get older, making them tougher. When they die they shed.
+The Epidermis is the outer section. the uppermost layer is the part that you see. It is made up of old, dead skin cells that are constantly wearing off. Skin is divided into 2 layers. The dermis is the inner section. It is made up of healthy living cells.
+The epidermis has a number of layers of cells. Those nearest the outside die and change into tough, horney substance called the Stratum Cornum or Horney layer. The layer is is constantly wearing away and falling off. under it is a layer of cells that grow very rapidly to replace the ones that are lost. It is called the layer of Malpighi, after Marcello Malpighi who first discovered its importance.
+The nail substance is dead skin cells that are heavily keratinized and hard. Nail substance which lengthens about 1/25 inch per week, is formed in the Stratum terminative in which the nail root is embedded. The flaky cells at the skin's surface are shedding constantly.
+Humans aren't born with the same cells. Humans do not keep throughout your body through your life. Cells constantly replace themselves. They die in orderly fashion. They grow and replace themselves in a orderly fashion.
+The epidermis is of course the outer layer of skin that you see. But the very top surface of the epidermis is known as the Stratum Corneum. This layer is made up of overlapping cells of the epidermis is replaced as they are shed and the brand new cells move on up from the lower level, known as the basal cell layer. Almost like snakes, humans shed skin too. Anyways these basal cells come up to the surface of your skin and become flat and hard. The same process continues. The cells eventually die and more and more cells take their place.
*Mozzimo
Here is a site that has lots and lots of more information on humans shedding!
http://www.engiastate.edu/explorer/topics/skin/skinny.htm
Here is a question and answer page I made!
Here Are Some Pictures Of Dry Skin!
*Gap Girl's Dry Skin
*Karm's Dry Skin
*Matt's Dry Skin
*Mozzimo's Dry Skin
*Angel's Dry Skin
Bibliography
http://www.nearlynecessary.com/facts.html