L2-ANH573w10 - POSTED - Anatomy-Physiology - Order - Survival

L2-ANH573w10 - POSTED - Anatomy-Physiology - Order - Survival

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1 Anatomy and Physiology – Order & Survival
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2 References Textbook (see Course Documents area) Essentials of Human Anatomy and Physiology , 8 th ed, by Marieb. Chapter 1, pages 1-21
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3 Lecture Outline Levels of Structural Organization Life Processes – The Characteristics of Life Survival Needs – Requirements for Life Five Environmental Factors Homeostasis
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4 Definitions Anatomy the science of structure and the relationships among structures Physiology the science of body functions structure of a part determines how it will function Histology the science of the microscopic structure of biological material ways in which individual components are structurally and functionally related
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5 - The human body is a collection of atoms held together by chemical bonds. together come from the environment – i.e., primiarily from food.
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6 Levels of Structural Organization From smallest to largest 1. Chemical Subatomic particles – electrons, protons, neutrons Atoms – hydrogen atom, oxygen atom, carbon atom, etc… Molecules – water molecule, glucose molecule, etc… Macromolecules – protein molecule, DNA, glycogen, etc… (Energy is required to maintain chemical bonds betweens atoms) 2. Cellular Cells Smallest living units in the human body - i.e., muscle cell, cardiac cell, etc… Organelles – structural components with specific functions within cells i.e., mitochondria (energy production), ribosomes (protein synthesis), etc…
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7 3. Tissue Work together to perform a particular function
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L2-ANH573w10 - POSTED - Anatomy-Physiology - Order - Survival

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