The Human body: an orientation Chapter 1 The Human body: an orientation

Anatomy Physiology “ana” = apart Greek “tomy” = to cut origin The study of structure and shape of the body and its parts Gross Anatomy – study of large, easily observable body structures Microscopic Anatomy – study of structures too small to be seen with naked eye “physio” =nature “ology” – the study of The study of how the body and its parts work or function Neurophysiology – study of the nervous system (NS) and how it works Cardiac Physiology – study of the fxning of the 

Levels of Organization page 3

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Life depends on the availability of: Pages 11-12 Life depends on the availability of: Water – 60% - 80% of body weight Food/Nutrients – needed for E and cell building Oxygen – needed for chem rxns in body Heat – needed for all metabolic rxns Usually generated by activity of skeletal muscles Pressure – breathing depends on appropriate Patm Both the quality and quantity of these factors are important.

Homeostasis

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Chapter Opener

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