principles of a+p 1112 session 3 function and classification of bones
TRANSCRIPT
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Principles of Anatomy and Physiology in Sport
Session 3 – The Skeletal System
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Re-Cap Last Session
• Functions of skeletal system – Name the 6??
• Bone structure – components??
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Bone Structure
• Compact Bone– Found at the
shaft or diaphysis of long bones
– External layer of bone that copes with the stresses of PA
• Cancellous Bone– Referred to as
the spongy part of a bone
– Found under the external layer of compact bone
– Bone marrow is found in this part of the bone
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Aim
• To complete assignment 1
Objectives
• To be able to identify and describe each classification of bone
• To be able to link the function a bone to a specific classification
Aims & Objectives
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Activity • With your partner work
together to list and briefly describe the 5 classifications (types) of bone
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Bone Classification
• There are 5 different types of bone, which are classified according to their shape, size & function
– Long – Short– Flat– Irregular – Sesamoid
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Classification of Bones
Bones are classified according to their function.
1. (Protection/calcium storage) FLAT BONES
2. (Protection) IRREGULAR BONES
3. (Levers/blood cell production) LONG BONES
4. SHORT BONES
5. SESAMOID
.
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Activity
• Individually think back to the previous session and try to give 3 examples of bone for each classification e.g. long bone - femur
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Bone Classification
Types of bone
Long Short Flat Irregular Sesamoid
HumerusUlnaTibiaFibulaRadiusFemur
TarsalsCarpalsMetatarsalsMetacarpalsPhalanges
CraniumScapularClaviclePelvisSternumRibsFacial Bones
VertebraeCoccyx
Patella
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Short Bone
• Consists mainly of cancellous bone surrounded by a thin outer layer of compact bone, e.g. metacarpals
• Often used in fine movement
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Flat or Plate Bones
• Consists of 2 outer layers of compact bone between which is a layer of cancellous bone
• Provide protection to internal organs, most importantly the brain
• Allow for muscle attachments, e.g. scapula
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Irregular & Sesamoid Bones• Irregular
– 2 outer layers of compact bone with cancellous bone between them
– Complex in shape, e.g. vertebrae. Vertebral column provides movement, protection of the spinal cord and support for muscles of the back
• Sesamoid– Bones that are embedded in tendons, e.g. patella
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Summary
• 5 classifications of bone
• Functions of each classification
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Objectives
• To be able to identify and describe each classification of bone
• To be able to link the function of a bone to a specific classification
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Next Session
• Assignment 1!!!