things in our lives and the chemistry they are made of. You are what you eat. But do you recall munching some molybdenum or snacking on selenium? Some 60 chemical elements are found in the body‚ but what all of them are doing there is still unknown. Roughly 96 percent of the mass of the human body is made up of just four elements: oxygen‚ carbon‚ hydrogen and nitrogen‚ with a lot of that in the form of water. The remaining 4 percent is a sparse sampling of the periodic table of elements. Some
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Question 1- Five Major Food Groups Fruit Vegetables‚ legumes Lean meat‚ fish‚ poultry‚ eggs‚ nuts‚ legumes Bread‚ cereals‚ rice‚ pasta‚ noodles Milk‚ yoghurt‚ cheese. How many serves children and adolescents need each day? Children and adolescents | Bread‚ Cereals‚ rice‚ pasta‚ noodles | Vegetables‚ legumes | Fruit | Milk‚ yoghurt‚ cheese | Meat‚ fish‚ poultry‚ eggs‚ nuts‚ legumes | Extra foods | Children 4-7 years | 3-4 | 4 | 2 | 3 | 1/2 - 1 | 1 - 2 | Children 8-11 years | 4-6
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NERVOURS SYSTEM: NEURONS: * STRUCTURE AND FUNCTION: Specialized cell transmitting nerve impulses; a nerve cell. Neurons have specialized projections called dendrites and axons. Dendrites bring information to the cell body and axons take information away from the cell body. Neurons communicate with each other through an electrochemical process. Information is transmitted to the receiving cell at junctions via chemical messengers called neurotransmitters. At this juncture‚ the neuron transmitting
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The musculoskeletal system is made up of bones‚ joints‚ and muscles. This system gives the body form and support‚ and protects the body while allowing it to move. Basically‚ the muscles in this system perform three important body functions: the movement of body parts‚ maintenance of body parts‚ and production of body heat. These muscles all consist of a mass of protein fibers grouped together‚ and most are of mesodermal origin. And almost all of the muscle fibers you will ever have or need were
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Human Body Systems Human Body Organization The Human Body is composed of Organ Systems are composed of Organs are composed of Tissues are composed of Cells DIGESTIVE SYSTEM is a body system made up of digestive tract and glands responsible for digestion of food. Functions of Digestive System: Digestion of food. Breaking down of chunks of food into bits. Absorption of food nutrients. Excretion of undigested food. PARTS OF DIGESTIVE SYSTEM. Digestive Glands Salivary Gland –
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The Human Body and Water XXXXXXX University of Phoenix/ Axia College SCI 241 July 1‚ 2009 The Human Body and Water The Most Important Nutrient Of all vitamins and minerals in the human body water is the most important. It is the one essential nutrient that the human body cannot survive without. The adult human body is comprised of approximately 60% water‚ the body of a small child‚ infants for example is comprised of approximately 70% water. Water is found throughout the body
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boundary between our bodies and the environment. The skin has several important functions‚ for example: Protection‚ temperature regulations‚ waste removal and sense of touch. Protection • The skin acts as a protective organ. The film of sebum and sweat on the surface of the skin (acid mantle). It acts as an anti-bacterial agent to help prevent the multiplication of micro-organisms on the skin. • The fat cells in the subcutaneous layer of the skin help to protect bones and major organs form injury
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The nine major regulatory bodies are: Internal Revenue Service (IRS) which is the federal agency responsible for administering and enforcing the Treasury department revenue laws through the assessment and the collection of taxes‚ determination of pension plan qualifications‚ and related activities‚ Securities and Exchange Commission (SEC) which is an independent federal agency that is responsible for regulating securities market in which stocks and bonds of the major companies is traded‚
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The human body is composed of many different types of cells. Cells are composed of many different types of molecules. Molecules consist of one or more atoms of one or more elements joined by chemical bonds. An antioxidant is a molecule that inhibits the oxidation of other molecules. Oxidation is a chemical reaction involving the loss of electrons which can produce free radicals. The free radicals can start chain reaction in the body and cause damage to cells and important chemicals in the body. Free
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of tissues in the human body that I am going to give examples of. These include the epithelial tissue‚ connective tissue‚ collagenous tissue and the nerve tissue. The first time of tissue is the epithelium tissue which has the function of helping to protect the body. There are four main types of epithelium tissues; squamous epithelial cells‚ Cuboidal epithelial cells‚ columnar epithelial cells and ciliated columnar cells. The squamous epithelium protects the linings in the body such as blood vessels
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