Epidermis: The Most Superficial Layer Of The Skin

Human pigmentation is influenced by hemoglobins within blood vessels in the skin, carotene and melanins. Melanin, the basis of pigmentation, can be found in the forms of eumelanin and phaeomelanin. Eumelanin is the brown-black pigment located in the skin, hair, and eyes. Phaeomelanin is a yellow to reddish-brown pigment found in small quantities within the skin, eyes, and red hair. Because of these two pigments, to a greater or lesser degree, we have the variation

The skin is divided into three different parts including the epidermis, dermis, and hypodermis. The epidermis is the outermost layer of the skin. This region of the skin has no blood cells or blood vessels running through it. All of the nutrients that the epidermis needs are received through diffusion from the dermis. The epidermis is made up of stratified squamous epithelial cells. The epidermis is made of five separate layers: the stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, and the stratum corneum. Starting at the innermost layer, the stratum basale is where mitosis of keratinocytes takes place. This layer of the epidermis also contains melanocytes which give the skin it’s pigment. As mitosis takes place in the stratum

The three layers that make up healthy skin: Epidermis, Dermis and Hypodermis. Epidermis is composed of keratinized, stratified squamous epithelium. This layer provides a thick, water proof protective covering over the underlying skins. The dermis layer is composed of primarily of dense, irregular, fibrous connective tissue that is rich in collagen and elastin. The dermis contains blood vessels, nerve ending, and epidermally derived cutaneous oranges such as sweat glands, sebaceous glands and hair follicles. The last layer is Hypodermis this layer is composed primarily of loose dead skin. The fat layer provides cushioning and insulation for

The outer most layer of the skin or Epidermis contains stratified squamous, keratinized, epithelial tissue; which lacks blood vessels, and the cells are packed closely together (Sloane, 1994, p.85)

The outermost layer of the epidermis is known as the stratum corneum, it is water resistant and when not damaged, it protects the body from foreign substances such as bacteria, virus etc. it also ensures the protection of muscles, blood vessels, nerves and internal organs. The skin is also thicker in regions that requires more protection such as the sole of the feet and palms.

There are three primary layers of the skin: the outer layer, the epidermis and the layer beneath, the dermis and the hypodermis. The epidermis is thin, tough and waterproof while protecting the body from outside bacteria invading the body. It also contains keratinocytes which are from the basal layer which is the deepest layer of the skin. The keratinocytes reach up to the epidermis, shed and new ones form again. The dermis is the second layer of the skin and is the thickest. It is made from fibrous and elastic tissues which are made from fibrillin, elastin and collagen to create the strength and flexibility. It also contains sweat and oil glands, nerve endings, blood vessels and hair follicles. Sweat glands help the body cool off during heat

The layers of the epidermis from deep to most superficial are the stratum basale, stratum spinosum, stratum grandulosum, stratum lacidum, and the stratum corneum. Each of these layers are unique due to the type of cells located in them which they are named after. They all together make up the epidermis, an avascular, superficial, and made up of epithelial cells.

Name_____________________________________________ Date____________ Period_____ Epidermis & Dermis Quiz Matching (4 points each) 1. Deep layer of the dermis 2. Layer of the dermis that houses the Pacinian Corpuscle 3. Dermal attachments that hold skin in place 4. Cell that produces melanin 5.

The skin is one of the most important organs of the whole human body. It is the largest organ in the human body and contains various functions including protecting the body from injury and preventing fluids from leaving or entering the body (Boer et al. 2016). In animals, the skin has various functions as well. The skin aids with locomotion in bats and aquatic mammals, help camouflage the body in chameleons, helps with finding mates for deer with their white tail, and serves for many other purposes. The skin is composed of three layers in the human body: the epidermis, dermis, and subcutaneous layer. Melanin is produced from melanocytes in the epidermis of the skin. Melanin is important for protection from ultra-violet (UV) rays.

Melanocytes are pigment-producing cells commonly found in your lower part of your outer layer of skin, which is known as the epidermis. The natural color of your skin is produced by melanin. When skin is being exposed to

The first layer is epidermis; this outer layer consists of elements such as melanin and carotene which forms the skins color, and keratin that forms finger nails*. Another trait it carries is to shed dead cells that build up over time*. The reason why skin sheds is to replace cells with new ones that allow the skin to quickly repair itself in case of injuries*. Over the span of a year we shed approximately one and half pounds*. It is fascinating that if it was not for this specialty, we

Stratum Corneum this layer is the outer most layers; it is formed from numerous layers of compressed scale- like, overlapping cells. What makes up the surface of the skin is corneocytes, which are commonly called ‘dead skin cells’. Keratinocytes are found in the epidermis they travel up through the layer where they are formed into corneocytes. The stratum corneum layer protects against lights, chemicals, water loss, heat and bacteria.

Although very informative, I nearly lost interest in the subject as it was a bit dry, however, with the incorporation of pictures, I was able to grasp the science of how this structure functions and the significance of melanin, “the most important substance imparting color to skin” (9). Melanin is formed in cells called melanocytes, located between the dermis and epidermis; these cells produce different amounts of melanin and this is the main reason why people have different skin colors (11,14). The author breaks down the scientific terms in a clear and coherent

The healing of superficial breaks is different from the healing of deeper wounds. The reason is because there are many layers in the skin. For example, The skin consists of many layers. Firstly, there is Epidermis, Dermis, and Subcutaneous layer. Epidermis is upon from the skin which means it is more likely to have dead epidermal cells to the surface. Dermis is the other layer below the Epidermis which involves with a process called Keratinization. Keratinization involves the process of dead cells into newly cells. Then, Subcutaneous layer has insulation that regulates the body temperature. For example, adipose tissue is like a cushion that provides insulation to the human's entire body. However, if you have a superficial in the skin, then

The epidermis is the outermost layer of mammalian skin and contains four types of cells: keratinocytes, which make up 90% of the cells found in this layer, Langerhans cells, melanocytes, and Merkel cells. The epidermis is a stratified squamous epithelial layer, containing keratinocytes organized in four main different strata (i.e. stratum