The Skin: The Physiology Of Skin

1280 Words 6 Pages
What protects a human being from external danger? A car 's seat belt? A helmet? Or our very own organ known as the skin? The skin is one of the most amazing organs in the human body. Skin is made up of specific cells and tissues to act as the boundary between you, me and the world. However, there are some factors that we have to pay attention to regarding our skins. The physiology of Skin will give an in dept explanation and description of its structure, functions, and diseases.
The skin is the largest organ in the integumentary system with an area estimation of 20 square feet. It forms a barrier that prevents harmful microorganism and chemicals from entering the body. Other important functions are insulation, temperature regulation, sensory
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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 carcinoma, and melanoma. This research will be covering the functions, structures, layers, and diseases of the skin. The skin covers the entire external surface of the human body and serve a variety of purposes. It serves as a protective barrier that prevents internal tissues from exposure to trauma, UV, radiation, temperature extremes, toxins, and bacteria. The skin consists of three layers but the two main ones are the epidermis and the dermis. The epidermis is composed of the outermost layers of cells in the skin. It contains pigment and pores, and its surface is made of dead cells that shed from the body. he stratum corneum is the outermost layer of the epidermis, consisting of dead cells. This …show more content…
Skin appendages include hairs, hair follicle, sweat glands, and sebaceous gland. Each has a unique role in maintaining homeostasis in the body. Hair and hair follicles are distributed over nearly the entire body surface and has some minor functions. They guard the head against physical trauma, heat loss, and sunlight. Eyelashes shield the eyes and nose hairs help keep dust and other foreign particles out of the respiratory tract. The appendages are largely consisted of fused keratinized cells. Chief regions of a hair are: shaft and root. Shape of the shaft determines the shape of the hair. Hair pigment is made by melanocytes at the base of the hair follicle. Different proportions of melanin lead to different colors (yellow, black, brown). They combine to produce all varieties of hair color. A decrease in melanin production results in gray or white

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