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The three regions that Fascia can be divided into:
Superficial:
Deep:
Sub-Serous:
- Superficial - Directly beneath the skin
- Loose connective tissue and adipose tissue
- Framework for nerves, blood vessel
- Reduces heat loss
- Provides mechanical protection
- Deep - Surrounds muscles, bones, nerves, blood vessels and organs
- Made of dense irregular tissue
- Allows free movement of muscles
- Sub-Serous - Located in CNS
- Protects spinal cord and brain
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Fascia is important in...
- Creating interstitial spaces
- Supporting and protecting body tissue
- Cellular respiration and metabolism
- Venous and lymph flow
- Shock absorption
- Motion
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The functions of connective tissue are:
- Supporting the body
- Strength
- Protects and insulates organs
- Binds together tissues
- Compartmentalises structures
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In the matrix of connective tissue, there are 3 different fibres that are found. What are they?
- Collagen - White, tough, inelastic, parallel and strong.
- This means it has limited flexibility
- Elastin - Provides strength, it is smaller than collagen and can stretch up to 150%
- Reticulin - Found in blood vessel walls, nerve fibres and fat cells. It is the framework for soft organs. e.g. spleen
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Ground substance has many functions, what are they?
- Fills the spaces between the cells, acts like 'glue'
- holds together connective tissue
- Medium for cellular exchange
- the viscosity and arrangement of fibres of matrix determine the strength of the CT
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Connective tissue is divided into 3 types by;
the type of cell,
and the ground substance and fibres present.
What are the 3 types?
- Dense Regular - Has high collagen numbers
- Linear fibre arrangement
- provides strength for ligaments and tendons
- Dense Irregular - Found in fascial sheaths/ aponeurosis
- multidirectional fibre alignment
- strength in all directions
- Loose irregular - In superficial and deep fascia
- - multi directional orientation of collagen and elastin
- - most elastic
- - greatest potential for change
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