HSS 2111 Lecture Notes - Lecture 2: Synovial Fluid, 2Degrees, Pivot Joint
18 Jan 2017
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Document Summary
Musculoskeletal system -anatomy & physiology looks at skeletal bones, connective tissues, articulations & muscle which provide support, protection, and ability to move our body. Adult human body has 206 bones that are 10-12kg of total bones. Need to be durable as well as light weight bone in order to be a functional bone. Appendicular upper & lower limbs without central bones. Long- bones that are longer than the width. Short- cube, squared shape -sesamoid is also classified here as well. Flat plain thinner bones, such as sternum. Bones" key functions: movement, support & protection, blood cell circulation (+protection from lymph), as well as storage -such as ca2+ minerals and fats. Components: collagen for flexibility, hydroxyapatite calcium-phosphate complex for durability - to resist fracture --> key in bone feature, bone cells - allow replacement of new bone cell + has ability to repair bone fracture. 1-10% replacement of bone happens every year.
