05 Cartilage

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05 CartilageHyaline cartilageElastic cartilageFibrous cartilageGrowthAppositionalInterstitial
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05 Cartilage
Attributes
NameValue
CartilageHyaline
CartilageElastic
CartilageFibrous
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Hyaline cartilage
Attributes
NameValue
Cellspresent
Cellslacunae
Matrixsmooth
Matrixlots
Fiberscollagen II
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Notes
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No blood supply
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Nutrients from surroundings
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Most common
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Function
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Low friction
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Lubrication of joint
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Distribution of forces
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Skeletal development
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Examples
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nostrils
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larynx
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costal cartilages
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joint cartilages
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bronchi
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trachea
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endochondral ossification
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Structure
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Amorphous ground substance
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Cells
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Chondrocytes
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Inside lacunae
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Cell nest
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Perichondrium
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Dense connective tissue
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Matrix
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Fibres
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Collagen II
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Proteoglycans
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Hyaluronic acid
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Slide 73
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Cross section trachea
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Macroscopic
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C-shaped cartilage ring
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Microscopic
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lacunae
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chondrocytes
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matrix
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perichondrium
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Elastic cartilage
Attributes
NameValue
Cellslots
Cellslacunae
Matrixlittle
FibersElastic
FibersCollagen II
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Notes
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Function
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Elasticity
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Resilience
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Pliability
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Examples
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Earlobe
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External acoustic meatus
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Auditory tube
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Epiglottis
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Structure
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Similar to hyaline cartilage
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Matrix
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Fibres
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Elastic fibres in matrix
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Collagen II
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Elastic lamellae
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Hyaline
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Proteoglycans
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Hyaluronic acid
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Slide 9
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Section through earlobe
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Macroscopic
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Purple elastic cartilage in centre of structure
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Microscopic
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lacunae
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chondrocytes
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matrix
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perichondrium
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Fibrous cartilage
Attributes
NameValue
CellsGroups
Matrixlittle
FibersCollagen I
FibersCollagen II
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Notes
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Function
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Compression
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Shearing
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Examples
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Inter-vertebral discs
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Sympysis pubis
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Sternoclavicular joints
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Temporomandibular joints
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Menisci of knee joints
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Tendon attachment to bone
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Structure
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Cells
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Chondrocytes in short rows
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Two or more cells
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Between collagen fibres
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Matrix
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Fibres
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Collagen I
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Collagen II
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Hyaline
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Proteoglycans
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Hyaluronic acid
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No perichondrium
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Slide 10
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Tendon
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Cross section
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Longitudinal section
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Microscopic
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chondrocytes
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collagen fibres
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matrix
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Growth
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Appositional
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Surface
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Inner portion perichondrium
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Fibroblast
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New fibroblasts
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Collagen type I
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Differentiate
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chondroblasts
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For growth
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secretes
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matrix
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collagen II
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Interstitial
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Within existing
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chondrocytes within lacunae
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retain ability to divide
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surrounding matrix is extensible
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divide
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share lacunae
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secretes matrix
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partition
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more matrix
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cells move apart