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Integumentary system

Integumentary system. 3rd hour Brenlee , Angela, Nora . Warm up. What is the largest organ in the body? How much does it weigh? . Integumentary system . The integumentary system is a set of organs that 

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Integumentary system

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  1. Integumentary system 3rd hour Brenlee, Angela, Nora 

  2. Warm up What is the largest organ in the body? How much does it weigh? 

  3. Integumentary system  The integumentary system is a set of organs that  Protect the body. These organs are the hair, the skin, and the nails. They also help with homeostasis. There are three layers to the skin. The epidermis, the dermis, and hypodermis. • The epidermis protects the dermis • The dermis contains blood vessels and nerve tissue • The hypodermis contains tissue that allows the skin to move and stretch

  4. INTERSTING FACT #1 • If you were to layout your skin on the floor, it would cover about 22 feet 

  5. Major Organs • Skin – the largest organ of the body. It helps protect the body and its organs, as well as regulate body temperature. Skin allows the body to sense cold and heat. • Epidermis (Layer 1) - the outermost layer of the skin. It creates skin tone and provides a waterproof barrier. • Dermis (Layer 2) - the layer that contains tough connective tissue, hair follicles, and sweat glands. • Subcutis (Hypodermis)(Layer 3) - the deepest layer of the skin that is made of fat and connective tissue. • Nails – protective plates that help prevent the fingers and toes from getting cut or scraped. • Hair – fine threadlike strands that grow from the skin of humans and mammals. • Exocrine Glands - glands that produce and secrete substances onto an epithelial surface by way of a duct (Sweat, mucous, etc.).

  6. Diagram of the Integumentary System

  7. INTRESTING FACT #2 The average amount of hair on a person's head is 120,000

  8. The Pathway of the Integumentary system How the skin heals from a wound: • The process starts when the body heals itself from the inside out and from the edges inward. Within a matter of seconds blood vessels will start to constrict to reduce bleeding, platelets flood the area and aggregate into clumps, then clotting factors will come to join he platelets to form a clot. During this, microphages come through looking for an infection and over time make growth factors to help repair the wound. How new skin forms after healed wound: • Once the clots turn to scabs, underneath fibroblast cells produce collagen. The collagen creates new capillaries and the skin on the edge of the wound gets thicker and begins to stretch under the scab. The skin may appear to have a reddish look and start to itch which is normal for the healing of the wound. Unless picked off, the scab should fall off on its own.

  9. Integumentary System Pathway

  10. INTERESTING FACT #3 Every month, the human body grows a whole new layer of skin. This Photo by Unknown author is licensed under CC BY.

  11. How the integumentary system works with other systems Immune system:the integumentary system works with the immune system as one of the first defense mechanisms.  Digestive system: the skin helps the digestive system synthesize and absorb vitamins. Nervous system: the skin supports the nervous system in terms of touch and feeling.

  12. Diseases and Disorders • Skin Cancer – the most common type of cancer in the U.S. There are three common forms of skin cancer, Basal cell carcinoma, squamous cell carcinoma, and melanoma • Psoriasis – A chronic and disfiguring genetic disease that causes a buildup of excess skin tissue that looks red and thick and is covered with silvery scales. Certain forms affect particular areas. • Acne - A skin condition that occurs when hair follicles plug with oil and dead skin cells.

  13. Interesting Fact #4 The human body sheds 40lbs of skin in their lifetime.

  14. Bibliography • Hoffman, Matthew. “The Skin (Human Anatomy): Picture, Definition, Function, and Skin Conditions.” WebMD, WebMD, 2014, www.webmd.com/skin-problems-and-treatments/picture-of-the-skin#1. • Catlin, Brian, and John Lyons. “The Skin, Hair, and Nails.” Edited by Rand Swenson, Chapter 4: The Skin, Hair and Nails, O'Rahilly, 2008, www.dartmouth.edu/~humananatomy/part_1/chapter_4.html. • “Integumentary System.” Innerbody, www.innerbody.com/anatomy/integumentary. • Editors, BD. “Integumentary System.” Biology Dictionary, 29 Apr. 2017, biologydictionary.net/integumentary-system/. • Ault, Alicia. “Ask Smithsonian: How Does Skin Heal?” Smithsonian.com, Smithsonian Institution, 3 Sept. 2015, www.smithsonianmag.com/smithsonian-institution/ask-smithsonian-how-does-skin-heal-180956501/. • Toro, Ross. “Diagram of the Human Integumentary System (Infographic).” LiveScience, Purch, 18 Mar. 2013, www.livescience.com/27990-human-body-systems-the-integumentary-system-infographic.html.

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