Musculoskeletal System

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Features of Axial Skeleton
Protection, Shape & Red Blood Cell Production
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Features Appendicular Skeleton
Movement & Muscle Attachment
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Support
`The skeleton keeps the body upright & provides a framework from muscle & tissue attachment
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Protection
The bones protect the internal organs & reduce the risk of injury
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Movement
The skeleton allows movement of the body as a whole & its individual parts, the bones form joints & acts as levers
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Blood Cell Production
Certain bones in the skeleton contain bone marrow which produces RBCs WBCs & platelets e.g sternum
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Posture
The skeleton gives the correct shape to our body
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Storage Minerals
The bones store minerals such as calcium, iron, potassium & phosphorus & release them into the blood
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Agonist
Prime Mover, the muscle that is contracting
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Antagonist
Support, the muscle that is relaxing
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Fixator
Assists by supporting & stabilising the joint & body
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Synergist
The muscles that stabilises a joint around which movement is occurring
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Type I Fibres
Slow Twitch Fibre,
Red in colour, resistance to fatigue, high levels of myoglobin, aerobic, low level contractions, produces large amounts of ATP
e.g postural muscles in the neck
SSE: Marathon Runners
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Type IIa Fibres
Fast Oxidative Glycolytic,
Red in colour, more print to fatigue than type I, large amounts of mitochondria & myoglobin, anaerobic, produced fast strong contraction, with intense training can turn into type I or type IIb
SSE: 400/800m Sprints
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Type IIb
Fast Glycolytic Fibres,
White in colour, anaerobic, low levels of myoglobin, contains few mitochondria, produce ATP slowly, short & fast bursts of power, rapid fatigue, can be turned into type IIa through resistance training
e.g in the arms
SSE: 100m Spri
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Other cards in this set

Card 2

Front

Features Appendicular Skeleton

Back

Movement & Muscle Attachment

Card 3

Front

Support

Back

Preview of the front of card 3

Card 4

Front

Protection

Back

Preview of the front of card 4

Card 5

Front

Movement

Back

Preview of the front of card 5
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