BIOS 251 Week 5 Virtual Discussion
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Week 5: Virtual Discussion Verneisha Pryor Chamberlain University College of Nursing BIOS251OX-19001: Anatomy & Physiology Professor Delhoum Week 5: Virtual Discussion This week, we are learning about structure and function of skin. Now let's turn our attention to diseases and abnormalities that can arise in the integument. For your initial post address one of the following topics: Discuss how skin contributes to maintenance of homeostasis. Skin contributes to maintenance of homeostasis by helping to regulate body temperature in two ways by using thermoregulation: releasing sweat and adjusting blood flow. >Thermoregulation Through Release of Sweat: “Eccrine sweat glands, whose primary function is cooling the body, release sweat. Water has a high heat capacity, so when the watery sweat evaporates, it carries away a significant amount of heat with it. This process is known as evaporative cooling.” (Edapt.ai. 2022). >Thermoregulation by Adjusting Blood Flow in the Dermis: “Blood vessels dilate when the body is warm, a process known as vasodilation, which allows more blood flow through the dermis and increases heat loss from the body. Blood vessels constrict when the body is cold, a process known as vasoconstriction, which reduces blood flow through the dermis to decrease heat loss through the skin.” (Edapt.ai. 2022). Discuss types of skin cancers. “There are three types of skin cancer: basal cell carcinoma, squamous cell carcinoma, and melanoma. Their names represent the cell types in which the cancer originates” (Edapt.ai. 2022). >Basal Cell Carcinoma: The most common type of skin cancer. It appears as shiny, small bump that often enlarges with a “pearly” edge. Seldom metastasizes and originates from the cells in the stratum basale (Edapt.ai. 2022). >Squamous Cell Carcinoma: Originates in keratinocytes of stratum spinosum. It can lead to metastasis in lymph nodes if untreated and appears as raised, red, scaly patch with ulcer in the middle (Edapt.ai. 2022). >Melanoma: Originates in melanocytes. It is especially aggressive and can quickly metastasize. Appears as “spilled ink” and uses ABCDE
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