Epidermis

The epidermis is the top most layer of the skin. The type of epithelia found here is keratinized stratified squamous epithelium. This layer consists of 4 layers of think skin or 5 layers of hard skin and is avascular which means there are not blood vessels in this layer. On the epidermis are epidermal ridges that allow it to lock with the dermis. The cells within the epidermis are keratinocytes that produce keratin and are the most numerous; melanocytes that are in the deepest layer of epidermis and produce melanin; tactile cells that are associated with tactile sensation and connect to nerve endings in the deepest layer of the epidermis; and epidermal dendritic cells that ingest bacteria and foreign debris and epidermal cancer cells. The layers of the epidermis are the stratum basal which is the deepest layer of the epidermis and is a single layer of columnar/cuboidal keratinocytes resting on basement membrane; the stratum spinosum which contains epidermal dendritic cells and is below the above the stratum basal; stratum granulosum is above the stratum spinosum and contains keratinocytes which undergo keratinization here; stratum lucidum is above the stratum granulosum and is mostly seen in thick skin and contains flattened, anucleate keratinocytes; and the stratum corneum is the layer above the stratum lucidum made up of 20-30 layers of anucleate keratinocytes and is constantly shedded.…

1. The three major layers that make up healthy skin are the epidermis, dermis, and the hypodermis. The epidermis is a keratinized stratified squamous epithelium that resists abrasion and reduces water loss. It have four cell types and five layers. The dermis made of strong, flexible dense irregular connective tissue. It contains the blood vessels, nerve fibers and lymphatic vessels. The sweat glands and the hair follicles live in the dermis layer. The hypodermis is deep to the skin. It is made…

The functions of the skin are protection, body temp regulation, blood resevior, excretion, metabolic functions, and cutaneous sensations. The skin is composed of two distinct regions: epidermis and dermis. The epidermis is composed of epithelial cells and is the outermost protective shield of the body. The epidermis is a keratinized stratified squamous epithelium consisting of 4 distinct cell types (keratinocytes, melanocytes, Merkel cells, and Langerhans’ cells) and 4-5 distinct layers. The…

This novel route, have several characteristics to distinguish them from the more traditional target specific route available. The difference between normal skin and the lip skin. The labial skin on our lips looks clearly different from the rest of our body [38]. That is because it is much thinner in comparison to normal skin. Skin is divided in three separate layers - the stratum corneum, the epidermis and the dermis [39]. The protective stratum corneum is the outer layer that we can see, the…

The integumentary system is comprised of the skin’s two layers, the dermis and epidermis, as well as hair, nails, glands, and nerves. Underlying the skin is the subcutaneous layer, or hypodermis, this layer is not a part of the integumentary system but is vital to its function. Made up of a layer of loose connective tissue the hypodermis serves to connect the skin to underlying muscle and bone (142). The hypodermis also assists the overlying skin by supplying it with blood vessels and nerves…

cuts, tears and irregularities caused by disease or disorder increases the risk of infection. Melanin, the pigment produced by the melanocytes in the basal layer of the epidermis, has a protective function. It helps to protect against ultraviolet light damage to tissues. Sensory nerve endings found at differing levels in the dermis warn of possible trauma and, by reflex action, prevent greater damage to the body. 5. Elimination – some toxins are eliminated from the body through the skin via the…

bodies have systems that work together to help us function as one organism. The systems we learned about in class are the integumentary system, digestive system, excretory system, skeleton system,, and muscular systems. We dissected a fetal pig to get a better understanding of it and how it relates to us. We named the pig the great name of Wilbur since he was a male. He was a full term, or ready to be born, since he measured out to be over 30 centimeters. Then after we identified every we…

There are as well a few other factors that may start the onset of the disease such as sunburn, a rash, and even sometimes stress related. The one good thing to remember with this disease is there are some treatments that may be done to either help the progression of Vitiligo and or help with the look of the skin, but actually no known complete cure for the disease. We have a pretty clear understanding of the disease and a few role models to help those struggling with the disease to look up too. …

Its thickness varies on the location in our anatomy. The integument consists of two layers known as the epidermis and the dermis, which rests on a fatty subcutaneous layer (hypodermis). The epidermis is the outer layer of the skin. The dermis is the second layer of the skin, beneath the epidermis. Skin cancer is an abnormal growth of skin cells and is most often developed on skins that are exposed to the sun. There are three major types of skin cancer: basal cell carcinoma, squamous cell…

strengthens the hair, nails and skin, which is called Keratin. They are found in the Basal Layer of the Stratified Epithelium, where they multiply by dividing. Keratinocytes over time become flatter, lose their nuclei and die. The second cell type is called the Melanocytes, which produces the skin darkening pigment melanin. The cell is located in the Basal Layer of the Epidermis, the Melanosomes are relocated to the Epidermal cells. Which then makes pigmentation of the Epidermis. Melanin is…