Skeletal

  • Created by: Rlwright
  • Created on: 07-04-18 10:55

Skeletal System

  • 206 bones
  • joint is where 2 bones meet
  • cartiliage is at the end of a bone

Types of Connective Tissue

Cartiliage:

1. hyaline 

2. Fibron

3. Elastic

E.g. joints, spinal discs and ears

  • Ligaments - connect bone to bone for stability
  • Tendons - attach muscle to bone to transfer forces to the skeleton
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Skeletal Function

FUNCTION

  • - Framework
  • - protect organs
  • - surface for muscle attachment
  • - produce red & white blood cells
  • - store minerals e.g. calcium
  • - provide levers for muscle movement
  • axial - skull, rib cage & spine
  • Appendicular - limbs & anchoring bones

SPINE Vertabrae

  • 7 Cervical
  • 12 Thoracic
  • 5 Lumbar
  • 5 Sacral (Sacrum)
  • 4 Sacral (Cocyx)
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Bones

Bones - Classified according to their shape

  • Long, short, flat, irregular & Sesamoid

Bone Formation  I.E. Ossification

  • Living tissue with its own blood supply
  • Osteoblasts - Build new tissue bone
  • Osteoclasts - Clear away old or damaged bone tissue

Types of Bone Growth

  • Endochondral - bone formed from a cartilaginous model
  • Intramembranous - bone formed from a membranous structure
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Bones 2

Bone Formation

1, Cartilaginous / Membraneous Model

2. Woven Bone

3. Lamellar Bone

Bone Repair

Inflammation - pain. swelling, redness & reduced ROM

Soft Callus - Granulation tissue becomes collagen & cartilage formed

Hard Callus - Woven bone laid into collagen matrix

Remodelling - Lamellar bone replaces woven bone

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