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Anatomy And Physiology With A Related Disorder

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Integumentary System: Anatomy and Physiology with a related disorder

The integumentary system is an organ that is made of the skin, nails, hair, and the exocrine glands. The skin is the largest organ in the human body. The skin covers the outer body forming a protective barrier from chemicals, disease, UV light, and physical damage. Hair and nails both develop from the skin to protects us from environmental damages. The integumentary has four main types of glands that excrete sweat, oil, wax, and milk. (Skin) The integumentary system can develop disorders or diseases. An example of a disorder would be skin cancer.
The Integumentary system is used for four main functions such as thermoregulation, protection, sensations, and synthesizing …show more content…

The Dermis is separated by two main layers called the superficial layer and the deep layer. The superficial layer consists of looser areolar connective tissue and the deep layer consists of dense irregular connective tissue. Dermal cells have four main cells types called fibroblast cells, macrophage cells, adipocyte cells, and mast cells. The most interesting cell to me are the mast cells. Mast cells release two chemicals called Histamine and heparin. Histamine increases blood flow that relaxes smooth muscle. Heparin is a blood thinner that increases capillary diffusion. (Tabor)
The epidermal Layer consists of 5 strata layers called the stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, and the stratum corneum. The stratum basale contains two cells called the keratinocytes and melanocytes. Keratinocytes produce keratin and melanocytes produce melanin. Melanin is only found in the epidermis and it protects the body from UV rays. The stratum spinosum has tons of layers of keratinocytes. “The deepest spinosum layer can undergo mitosis, pushing more keratinocytes toward the surface” (Tabor). The stratum granulosum has cells that contain an oily substance. This oil substance waterproofs the skins and prevents the skin from dehydrating. Stratum Lucidum cells have no nuclei or organelles. The stratum corneum

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