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The more superficial cells of the epidermis become less viable and die what factors account for this natural demise?
We skin cells are made, they are made in the deep layers of the skin, the dermal layer. This layer of the skin has blood supply, and cells that are in the dermal layer stay alive just fine. However, as cells in the upper layer, the epidermis, die; the skin cells in the dermal layer gets, pushed up into the epidermal layer. In this layer of the skin, there is no blood supply. However, nutrients are still passed from the blood rich dermal cells to the epidermal cells. The problem occurs when the epidermal cell is pushed right to the top of the epidermal layer, where there is no blood supply and it is too far away from the dermal layer to get nutrients vie osmosis. The cells in the upper epidermis get no nutrients and therefore die. Epidermal cells also die, ironically, because of the substances that they produce, keratin. Keratin is secreted by all skin cells to make the skin tough, durable and waterproof. However the build up of this keratin in the cell, leaks out in the extracellular space (the area outside the cell) and starts to breakdown the membranes of the cells around them and the cells essentially end up killing each other.Epidermal cells die because of the loss of nutrient supply as they get closer and closer to the surface of the skin, and the buildup of keratin inside them that leaks out into the area outside the cells.Read more: Why_do_epidermal_cells_die
What is the function of the epidermal cell?
protects skinThe function of the cells in the epidermis is to die and form a protective layer around the body.
What is the life cycle of an epidermal cell?
The cells on the epidermis have definite life cycle. Each epidermal cell begins life deep in the epidermis, where cells divide to form new cells. The new cells gradually mature and move upwards in the epidermis as new cells form beneath them. After about two weeks, the cells die and become part of the surface layer of the epidermis. Hope this helps!!
What layer of the epidermal region has scalelike cells full of keratin that constantly flake off?
The outer layer of the epidermis is full of scale like that frequently flake off. These cells are pushed to the surface as they begin to die.
What kills blood cells?
what cause blood cells to die off
What can cause a cell to die?
In simple terms cells perform apoptosis in which the program thereself to die through a series of key regulatory proteins. Examples include: when the cells maintain injury to parts or to specific parts of DNA or when the cells are infected with viruses. In other words cells can 'program' to die when mechanical damage is sustained or when external factors come into play. The outcome is to protect the organism as a whole.
Do mris cause viruses to eat your blood cells?
Sometimes they do and people can die from it.
How might enviromental factors might cause extinction?
Well, environmental factors like climate change can cause a species to die out because they were not able to adapt to their environment.
What are limiting factors in an ecosystem?
Temerature- can affect living organisms ; cause them to die or have to relocate
Will freezing a germ kill it?
the answer is yes. this is because the decreasing temperature would cause most of the bacteria cells to die and eventually the bacteria would die.
Dangers of very high fevers?
A very high fever can cause brain cells to begin to die off.
What is the cause of jaundice?
When red blood cells die, the heme in their hemoglobin is converted to bilirubin in the spleen. The bilirubin is processed by the liver, enters bile and is eventually excreted through feces. Once hemoglobin is in the red cells of the blood, it circulates for the life span of those cells. The hemoglobin that is released when the cells die is turned into bilirubin. If for any reason , the red blood cells die at a faster rate than usual , bilirubin can get backed up in the blood and cause the disease. For full details check out the site http://www.jaundicesymptoms.net/
