It takes anywhere from 15 to 30 days for cells to migrate from the stratum germinativum to the stratum corneum.
8 to 14 days
Because the Keratin in our hands & feet absorbs the water & produces swelling. As a result, the excess amount of Stratum Corneum in the skin produces wrinkles. The hands & feet are the only places this occurs because the skin is thicker on the hands & feet than anywhere else on the body.
Yes. The plural is strata (both are pronounced with a long "a", as Straytum, or Strayta).
This is the deepest layer of the skin structure and, as such, acts as stem cells since they are the least differentiated or least specific type of skin cell. As they migrate upward, environmental factors and neighboring cells increasingly cause them to become more specific cell types. Ocassionally called the "basement membrane," found to be essential for proper healing after thermal injuries to the skin. Was eventually found to be the reason why earlier attempts at skin grafts using only upper skin cells were found not to be effective in 3-rd degree full thickness burns. Modern skin grafts now use a layer of these stratum g. cells on the artificial skin, followed by other cells added later. The result has been a marked improvement in the rate of successful skin grafts.
There are many different methods of dating fossils including their geological stratum and carbon dating. Phylogenetic trees are dated by their geological stratum because they have something called the COI gene that shows they have roots from a long time ago.
Water can, and does, move through the pores of human skin. Sweat (mostly water) is excreted (out) through skin pores. Additionally, some water is absorbed (in) through the skin pores. However, most water that is absorbed through the skin, enters through the stratum corneum, the outermost layer of the skin. This is what makes skin pruney, when a long time is spent in the water. Human skin can absorb a wide variety of other chemicals, as well. This is why the delivery of some medications is accomplished using a patch.
A nerve cell, or neuron, is long and branching.
In a cell, the tangles of long strands of DNA form the
The protoplasm of a cell is the medium through which nutrients and energy are transported. Without the protoplasm, a cell would not live for very long.
A cell DNA from one cell can stretch 6 feet
The cell is long because the , muscle needs to stretch and contract when you use that muscle. Therefore it needs to be long in order to stretch.
The average sperm cell is about 40 microns long.
Epithelial tissue