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The basal layer of the closest layer to blood supply. You do not have blood supply to the outer layers of the skin.
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What is an epidermal cell?
An epidermal cell is a cell that is part of the outer layer of an organism. For example, in humans, skin cells are epidermal. Leaves on plants have epidermal layers on the top and bottom of the leaf.
How many layers of skin do you have to penetrate before you bleed?
Really two. The epidermis is the most superficial layer of skin but is avascular (i.e. no blood vessels). The layer of skin deep to the epidermis is the dermis and that is where the blood vessels are located. So unless you penetrate into the dermis you will not bleed.
What is the most superficial epidermal layer?
Stratum Corneum.
Most inferior epidermal layer?
Stratum Basale
What is the epidermal layer?
The dermis. And uner the dermis is the hypodermis
What epidermal layer is closest to blood supply?
Stratum Basale
What two factors cause epidermal cells to die?
Low blood supply and low keratin cause epidermal cells to die. Epidermal cells make up the epidermis, the outer layer of the skin covering the exterior body surface of vertebrates.
What epidermal layer is immediatley adjacent to the dermis?
The dermis is the layer that is closest to the epidermis. It lies between the epidermis and the hypodermis.
What epidermal layer does malignant melanoma arise?
Malignant melanoma arises in the Stratum basale layer of the epidermal layer.
What is the second epidermal layer?
The layer below the Epidermal layer is called the Dermal layer. It's a connective tissue made up of collagen and elastin.
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 an epidermal cell?
An epidermal cell is a cell that is part of the outer layer of an organism. For example, in humans, skin cells are epidermal. Leaves on plants have epidermal layers on the top and bottom of the leaf.
Which layer of skin have their own blood supply?
The subcutaneous layer.
What is the significance of the epidermal layer being avascular regarding wound healing?
what is the significance of the epidermal layer being avasculer regardin wound healing
Which layer of skin does not its own blood supply?
EPIDERMIS
What layer of the skin does have a blood supply of its own?
The epidermis.
Which epidermal layer has single layer of columnar cells?
stratum germativum
