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Chap1 - What is Anatomy and Physiology A&P Anatomy Study of...

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What is Anatomy and Physiology?
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A&P Anatomy - Study of the structure and shape of the body and its parts. Study of “form”. Gross Anatomy: you can see these structures with the naked eye. i.e (a femur ) Microanatomy, also called histology views the tissues of large structures to see their cellular detail: i.e slide of femur tissue. Physiology - Study of function. It is largely a study of the body’s processes related to homeostasis.
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What Does it Mean to Be Human? Belong to order of mammals: PRIMATES Opposable thumbs, make hands Prehensile (able to grasp). Eyes are forward-facing allowing for sterioscopic vision which gives depth perception. Bipedalism- Standing upright and walking on two legs
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Characteristics of ALL life Organization (characterized by levels) Cellular Composition -living things are always compartmentalized into one or more cells. Metabolism - they take in molecules from the environment and chemically change them to make more of themselves; metabolism includes: catabolism- breaks down molecules and anabolism -builds molecules and also excretion -elimination of metabolic wastes Response to Stimuli -ability to sense changes and react Homeostasis -ability to maintain internal stability Development - any change in form or growth over lifetime. Reproduction -ability to produce a copy of oneself
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Levels of Organization From the simplest to most complex level of organization in the body: 1. Atoms which form mostly molecules. 2. Cells- smallest units of living things. 3. Tissues- groups of cells which combine to have a common function. 4. Organ - 2 or more tissues performing specific function. 5. Organ System- Group of organs working together for a common purpose.
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Organ System Overview: . Cardiovascular - Transport of nutrients to cells and wastes away from cells Endocrine : Controls body activities slowly through the use of chemicals called HORMONES which travel in blood to from gland to distant target organs. Respiratory: Keeps bloods supplies with oxygen, removes carbon dioxide from blood. Digestion: Breakdown of food and absorbsion of nutrients into blood. Urinary: Maintenance of water balance; acid/base balance; excretion of nitrogenous wastes products.
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