Collagen Flashcards
Give composition of cartilage in terms of cells and extracellular components
Chondrocytes, Collagen fibres, Extracellular matrix
Chondrocytes
Only cell type in cartilage: produce and maintain matrixCan differentiate into osteoblasts (endochondral ossification)
Collagen fibres
Type II: provide tensile strength, resiliency and structural integrity
Extracellular matrix
Sulphated proteoglycans and glycosaminoglycansProvide resilience, elasticity and non-compressibility
Classify the 3 major types of cartilage, describing the structural differences between them
Hyaline cartilage, Elastic, Fibrocartilage
Hyaline cartilage
Chondrocytes situated in fluid filled lacunaeMatrix between cells contains many collagenous fibresPerichondrium (vascularised)
Elastic
Contains many elastic and collagen fibresDoes not calcify or ossify in old ageperichondrium
Fibrocartilage
Irregular dense fibrous tissue with few chondrocytesMeniscus, intervertebral discs and pubic symphisis
Relate the different anatomical distribution of the Hyaline to its different functions
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
Relate the different anatomical distribution of Elastic cartilage to its different functions
Pinna, epiglottis, parts of larynxMaintains shape, support
Relate the different anatomical distribution of fibrocartilage to its different functions
Discs between vertebrae, between pubic bones, edges of articular cavitiesShock absorbance, sturdiness without allowing movement, deepens sockets