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Are cells taller in the basal or superficial layer of the epidermis?
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The portion of the epidermis from which cells are constantly sloughed off is the?
basal layer
What is the layer of epidermis that has pigment-producing melanocytes?
Melanocytes are present in basal layer of epidermis .
What is the most superficial layer of the epidermis to contain living cells?
Tunica
Where are pigment cells located in the body?
Pigment cells (melanocytes) are found in the basal layer of the epidermis.
Cells of the lowest level of the epidermis invade the dermis and hypodermis?
Basal cell carcinoma starts at the basal cells of the lowest level of the epidermis and invades the dermis and hypodermis. Basal cell carcinoma is a type of skin cancer that is very common.
What body part is Pigment cells located?
Pigment cells (melanocytes) are found in the basal layer of the epidermis.
Where are pigments located in the human body?
Pigment cells (melanocytes) are found in the basal layer of the epidermis.
Which portion of the epidermis has actively reproducing cells?
The basal layer, also called the stratum germinativum is the most active part of the epidermis and the place where new cell growth takes place.
What layer of the epidermis is the layer where mitosis occurs?
We find it in the deepest layer of the epidermis called Stratum Basal in which the stem cells undergo Mitosis replacing keratinocytes lost at the stratum corneum, the apical surface of epidermis.
What do the epidermis consist of?
The human epidermis is composed of four cell types which are keratinocytes, melanocytes, Langerhans cells, and the Merkels cells.Constituting 95% of the epidermis is the Keratinocytes,making it the major constituent.
What is basal carcinoma?
That is a form of skin cancer linked to over-exposure to UV light.
How is damaged skin repaired?
Actually it is not that difficult for the skin to repair itself when only the epidermis is damaged. It's when the dermis is injured that the process becomes more complicated. It is difficult to only injure the epidermis, but it happens. The epidermis is avascular, meaning it does not contain blood vessels and therefore does not bleed. Epidermal wounds usually involve only minor damage to the superficial epidermal cells although the center of the wound could extend slightly into the dermis. These types of wounds include minor skin abrasions, where a portion of the skin has been scraped away, and minor burns. In response to an epidermal injury, basal cells from the deepest layer of the epidermis --the stratum basale-- surrounding the wound break off from the basement membrane (epidermal-dermal junction). The cells then enlarge and migrate across the wound. The cells continue to migrate until they meet cells migrating from the opposite side of the wound. Migration of the cells stops when each cell is finally in contact with other epidermal cells on all sides. As the basal epidermal cells migrate, a hormone called epidermal growth factor stimulates basal cells to divide and replace those who have left to fill in the wound. The relocated basal epidermis cells divide to build new strata, thus thickening the new epidermis. Viola, the skin is repaired! (Information used from the text book: Principles of Anatomy and Physiology)
