The system also acts as a mini-excretory system, secreting salts, water, and wastes in the form of sweat. Cells in the skin utilize sunlight to create vitamin D, which is necessary for normal bone growth and function. Finally, the skin contains sensory receptors or specialized nerve endings that allow an individual to "feel" sensations such as touch, pain, pressure, and temperature. Protection The outermost epidermal layer of the skin is a barrier between the internal environment of the body and the external world. Keratin, in abundance in this outer layer, waterproofs the body.
The serous membrane lines the cavities in the body that secrete fluids such as the lungs, heart, stomach, and intestines. The serous membrane is made up of a thin layer or mesothelium covering connective tissue. If the serous membrane got damaged the organs in your body would have a hard time doing their jobs. The fourth and final type of membrane is in charge for surrounding the synovial joints such as the hips, knees, elbows
The Skin, Hair and nails system Chris Samuels-Hannan This assignment will attempt to identify, describe and explain the function of the skin hair and nails. Unit Ref: T/502/9093 Unit title: Anatomical and Physiology: Structure of the Body: Ref 1.8 and 2.8 The skin, we are told in many anatomy and physiology books, is the largest organ of the body. It completely covers the body and is thickest in the areas around the hands and feet. Structurally the skin is made up of two layers with a further subcutaneous area under the two layers. The epidermis (the outer layer) is made up of several layers itself.
The effectors are sweat glands and muscles. If we are too hot or too cold, the processing centre sends nerve impulses to the skin, which has two ways to either increase or decrease heat loss from the body's surface. Blood and temperature control - Higher When we are too hot, blood vessels supplying blood to the skin can swell or dilate (vasodilation). This allows more warm blood to flow near the surface of the skin, where the heat can be lost to the air. This is why some people's skin looks redder when they feel too hot.
This clots the torn vessel in to prevent blood leakage. The swelling can then be absorbed and the removal of debris and blood clot should follow. Psychological responses to injury An immediate response to being injured and not being able to participate in short term physical activity would be this example. On the 23rd of February 2008. North
Avocado is an ultra-moisturizing fatty fruit that soothes sunburned skin and reduces skin inflammation when applied topically. Not only that it slows the premature aging of the skin, it actually changes the skin’s molecular composition, removes wrinkles around the eyes, makes the skin appear younger. It also has anti-microbial chemicals that can help prevent acne and treat other skin diseases. With the regular use of an avocado face mask, your skin will be nourished and cleansed regardless of your skin type for it works well with any. This ingredient is one of the components of Freeman Clay Mask available on amazon.com online shop for only $5.20 5.
How skin cells die. As the body’s largest organ, the skin serves many protective and regulatory functions. Protection of this vital organ is paramount to the promotion and maintenance of health as well as thermoregulation, sensation and body image. Our skin is an important organ whose diverse functions are not always appreciated. It is the interface between the body and the rest of the world.
In addition, when we sweat, the water inside it gains some the heat energy on the skin and evaporates- losing more heat. When the body temperature is back to normal, the hypothalamus shuts off cooling mechanisms. Vasoconstriction Vasoconstriction also needs a stimulus. If the stimulus decreases body temperature, for example, cold surroundings, the hypothalamus sends signals along nerves to activate mechanisms in our body to help it warm up. One of these mechanisms includes- vasoconstriction.
Another significant group of cell in the epidermis are melanocytes, the cells producing melanin, the pigment responsible for skin tone and color. Finally, Langerhans cells are essentially a forepost of the immune system in the epidermis. They prevent unwanted foreign substances from penetrating the skin. The condition of epidermis determines how "fresh" your skin looks and also how well your skin absorbs and holds moisture. Wrinkles, however, are formed in lower layers.
By standing too close to the sink it may spread any contamination to your cloths. Then, turn on the faucet and adjust the temperature so that the water is warm. If the water temperature is too hot or too cold it can dry out and chap your skin causing your skin to crack and cracked skin can allow infections into your body. Then, wet your hands by placing them under the flow of water, apply liquid soap, and work soap into a lather by rubbing your palms together and rub the soap in between your fingers for at least thirty seconds. Rubbing your hands together helps in the removal of microorganisms and other germs from the surface of your skin.