The Integumentary system

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The Integumentary system : 

The Integumentary system By Tracey Wool

General Information : 

General Information Most people are unaware of the fact that the skin, is the largest organ of the human body. When skin is recognized most people only think about what covers our organs and keeps everything inside of us. On the contrary, Skin also includes the hairs over our body and are toe nails and finger nails. The Integumentary system has many different functions and like all other body systems is very complicated yet interesting.

Layers of the skin : 

Layers of the skin There are several different layers to this system and each serve an important function to this system. Here are the main two featured in this power point: Epidermis Dermis

IMPORTANT NOTE: : 

IMPORTANT NOTE: Like any other system in the body the Integumentary system is made up of cells and tissues

Slide 5: 

As we learned in the introduction power point to anatomy… CELLS GROUP TOGETHER IN THE BODY IN ORDER TO FORM TISSUES- A COLLECTION OF SIMILAR CELLS THAT FORM TOGETHER IN ORDER TO PERFORM A CERTAIN FUNCTION IN THE BODY.

epidermis Layer : 

epidermis Layer Most outer layer of skin Consists of Epithelial tissue (cells tightly packed together providing a barrier between the inside of the body and the outside)

Layers that make up the Epidermis : 

Layers that make up the Epidermis The Stratum Corneum: Tissue in this layer is made up of dead cells The Stratum Licidum: Contains two to three layers of anucleate cells. This layer is mostly visible in thick skin around the body, such as the palms of hands and soles of feet The Stratum Granulosum: contains 2-4 layers of cells held together by desmosomes. This layer of skin tissue offers a place for keratin to be kept and stored. The Stratum Spinosum: contains 8-10 layers of cells connected by desmosomes. These cells are moderately active in mitosis. The Stratum Basale: Thought of as the base where

Melanocyte & Langerhans (cells in the epidermis layer) : 

Melanocyte & Langerhans (cells in the epidermis layer) Melanocyte cells: Found in the bottom of the epidermis layer (different amounts of cells in each person’s body) The function is to produce melanin (pigment), which provides skin with the color it has (also contributes to how individuals may or may not react with the sun) Langerhans: Cells that deal with infections and other viruses within body

Cells in the DERMIS layer : 

Cells in the DERMIS layer Nerve Cells The Job of the nerve cells is communication. It aides to the transmitting messages between the skin and the brain. Examples of feelings that are communicated to each other are those of pain and other sensations that happen to your body that tell your brain what and how to feel. Blood Vessels The job of the blood vessels is to aid in a constant blood flow for the skin. It is interesting because these vessels combine with the nerve cells and together they help deliver important things to the body such as nutrients and oxygen.

Hair Follicles, oil glands, sweat glands(Dermis layer) : 

Hair Follicles, oil glands, sweat glands(Dermis layer) (NOTE: Most people are unaware that hair follicles are also apart of this human body system.) The hair follicle cells are located in this layer. Obvious enough, this is where hair begins to grow The oil glands located here also have an important function to the body. Their job is to maintain the important balance between the moisture in the skin. This is very important because without the moisture the hair and nails on your body would dry out. The sweat glands control and safely regulate body temperature.

Collagen and reticular fibers (tissues in the dermis layer) : 

Collagen and reticular fibers (tissues in the dermis layer) Collagen: Helps strengthen the skin (it is a connective tissue) Makes up the majority of the strong tissue in the dermis Provides the skin with elasticity Reticular fibers: Responsible for forming different layers of tissue in skin Are elastic and form together easily.

Slide 12: 

THE END

Bibliography : 

Bibliography http://science.nationalgeographic.com/science/health-and-human-body/human-body/skin-article.html http://www.rapidlearningcenter.com/biology/anatomy-physiology/05-The-Integumentary-System.htmlrg/medterm/medtm5.htm http://www.besthealth.com/besthealth/bodyguide/reftext/html/skin_sys_fin.html IMAGES slide 1 picture of nail, picture of hair, diagram of layers of skin http://www.awakeningskincare.com/skincare/category/nails/ 26 September 2010 http://www.google.com/imgres?imgurl=http://www.ourvanity.com/26 September 2010 http://www.besthealth.com/besthealth/bodyguide/reftext/html/skin_sys_fin.html26 September 2010 slide 3 picture of dermis and epidermis http://www.engin.umich.edu/class/bme456/othersoft/othersoft.htm26 September 2010 Slide 7 layers of the epidermis http://www.tutorvista.com/biology/epidermal-layers-of-skin26 September 2010 Slide 8 melanocyte image http://palaeo.gly.bris.ac.uk/melanosomes/melanin.html26 September 2010 Slide 10 hair follicle diagram, image of follicle and oil gland http://grayhaircolor.info/youthair.htm26 September 2010 http://www.tazorac.com/acne_information.aspx26 September 2010