NSE 12A/B Lecture Notes - Lecture 8: Orthostatic Hypotension, Defecation, Human Musculoskeletal System
10 Jan 2017
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Document Summary
Describe the principles of body mechanics (body alignment, body balance, friction). Body mechanics: coordinated efforts of the musculoskeletal and nervous systems to maintain balance, posture, and body alignment during lifting, bending, moving, and performing activities of daily living. Pay attention to ergonomics is also important. Purpose of bm is to reduce the risk of injury to the patient or yourself as you work. Good body mechanics is use of correct muscles to complete activities safely and efficiently without unnecessary strain on any muscle or joint. Body alignment: relationship of one body part to another along horizontal or vertical line. Reduces strain on musculoskeletal structures, maintains adequate muscle tone, and contributes to balance. Body balance: low center of gravity over wide, stable base of support and line of gravity falls vertically through base of support. Friction: physical force of resistance through rubbing. Wider base of support = greater the stability. Lower center of gravity = greater stability.
