Chapter 1 An Introduction to the Human Body Anatomy – science of body structures and relationships among structures Physiology – science of body functions SIX LEVELS OF BODY ORGANIZATION (Given in order smallest to largest) Chemical level a. atoms – smallest unit of matter that participates in chemical reaction b. molecules – two or more atoms joined together c. Several atoms are essential for life: Carbon‚ Hydrogen‚ Oxygen‚ Nitrogen‚ Phosphorus‚ Calcium‚ Sulfur d. Examples of biological
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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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importance of the Respiratory system is quite obvious given that as human beings we need this system to help us with our most fatal tasks of breathing. Although the importance is assumed and acknowledged‚ many do not really get the whole concept of the Respiratory system. For example‚ how it works? Why it works? And what all is involved. These questions and others will be strategically answered in the following work. The Respiratory System delivers oxygen to the body and takes the carbon dioxide
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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 of the more prominent representatives are called macro
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Introduction to the Human Body Matching: Directions of the body Medial: Toward the midline of the body; opposite of lateral. Proximal: A structure is nearer to the trunk than is another part; opposite of distal. Distal: The part of the radius (arm bone) that is closer to the wrist than the elbow. Superior: The lung is above the diaphragm; above is described as… Anterior: Toward the front (the belly surface); another word is ventral. Matching: regional Terms Axillary: Armpit. Patellar: Kneecap
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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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Function of the Skin The skin is more than just external covering. It acts as a sensitive 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
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Urinary Incontinence is a fairly common problem among people. It is the loss of bladder control and in some cases fecal control. Some say it’s just a normal stage of aging. Others say‚ in women it’s a result of giving birth to children. Fortunately neither one of those ate completely true. Science shows that neither of these causes incontinence. Urinary Incontinence is in fact a disease with many causes. Some simple and some complex‚ but millions of people living with this disease. Those who
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Introduction We know a lot about the human anatomy‚ its physiology‚ and how to treat the diseases that tend to disturb the balance between them‚ but‚ that was not always the case. It has really been that only in the past few centuries‚ scientists were able to dissect and experiment on other humans. Such experiments were the main contributors to our current knowledge in some fields of science‚ especially medicine. Dissections performed on rabbits‚ mice‚ chimpanzees‚ and other animals‚ along with some
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1. Thermoreceptors perceive the impact of heat on the part of human body and send signals through neurons to brain that causes the feeling of pain. If the signals fail to pass from thermoreceptors to brain‚ the risk of burning the part of the body arises. The pain is the indicator of the danger to human body and the ultimate manifestation of pain is a pain shock‚ which may be deadly for human body. 2. Olfaction is responsible for smell sense. Gustation is responsible for taste. They involve chemical
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