HLTC22H3 Chapter 5: Chapter 5(1).docx

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26 Apr 2012
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Chapter 5 aging of the skin and musculoskeletal system. The skin is the front line of defence against harmful environmental influences and is an important part of our immunologic and endocrine systems. Critical in temp maintenance and aids in homeostasis. Sensory nerves in the skin allow us to monitor the environment but also warn us of danger through pain. The integumentary system has important symbolic functions in that it is a key component of our appearance and is a critical source of cues that affect social interaction. The skin is that largest and most visible organ of the body. Outermost layer of the skin is called the epidermis , and the second layer is the dermis. Beneath the epidermis and dermis is a layer of subcutaneous fat; hair follicles, nail beds and nails, and sweat and sebaceous glands are embedded in the various layers.

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