Collagen Flashcards

1
Q

Give composition of cartilage in terms of cells and extracellular components

A

Chondrocytes, Collagen fibres, Extracellular matrix

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2
Q

Chondrocytes

A

Only cell type in cartilage: produce and maintain matrixCan differentiate into osteoblasts (endochondral ossification)

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3
Q

Collagen fibres

A

Type II: provide tensile strength, resiliency and structural integrity

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4
Q

Extracellular matrix

A

Sulphated proteoglycans and glycosaminoglycansProvide resilience, elasticity and non-compressibility

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5
Q

Classify the 3 major types of cartilage, describing the structural differences between them

A

Hyaline cartilage, Elastic, Fibrocartilage

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6
Q

Hyaline cartilage

A

Chondrocytes situated in fluid filled lacunaeMatrix between cells contains many collagenous fibresPerichondrium (vascularised)

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7
Q

Elastic

A

Contains many elastic and collagen fibresDoes not calcify or ossify in old ageperichondrium

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8
Q

Fibrocartilage

A

Irregular dense fibrous tissue with few chondrocytesMeniscus, intervertebral discs and pubic symphisis

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9
Q

Relate the different anatomical distribution of the Hyaline to its different functions

A

Trachea, larynx, nose tip, connections between ribs and breastbone, bone ends where the form joints (no perichondrium here), forms fetal boneReduces friction, permit movement, provides support (c rings keep windpipes open), longitudinal growth

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10
Q

Relate the different anatomical distribution of Elastic cartilage to its different functions

A

Pinna, epiglottis, parts of larynxMaintains shape, support

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11
Q

Relate the different anatomical distribution of fibrocartilage to its different functions

A

Discs between vertebrae, between pubic bones, edges of articular cavitiesShock absorbance, sturdiness without allowing movement, deepens sockets

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