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Joints - Anatomy & Physiology (view source)
Revision as of 12:20, 18 July 2008
, 12:20, 18 July 2008no edit summary
<big><center>[[Musculoskeletal System - Anatomy & Physiology|'''BACK TO MUSCULOSKELETAL ANATOMY AND PHYSIOLOGY''']]</center></big>
<big><center>[[Musculoskeletal System - Anatomy & Physiology|'''BACK TO MUSCULOSKELETAL ANATOMY AND PHYSIOLOGY''']]</center></big>
Joints comprise broadly two categories:
Joints comprise broadly two categories:
*'''Synarthroses''' form joints that are relatively rigid
*'''Synarthroses''' form joints that are relatively rigid
*Allow a variable degree of movement
*Allow a variable degree of movement
=='''Fibrous Joints'''==
==Fibrous Joints==
*Most occur in the skull: known as '''sutures'''
*Most occur in the skull: known as '''sutures'''
**Key in development: allow extension of individual bones during growth
**Key in development: allow extension of individual bones during growth
*'''Gomphosis''': attachment of tooth to bone within its socket
*'''Gomphosis''': attachment of tooth to bone within its socket
=='''Cartilaginous Joints'''==
==Cartilaginous Joints==
*'''Synchondroses''': eg. joints between epiphyses and diaphyses of juvenile long bones, disappear on maturity
*'''Synchondroses''': eg. joints between epiphyses and diaphyses of juvenile long bones, disappear on maturity
**Permanent synchondroses: the joint between the skull and '''hyoid'''
**Permanent synchondroses: the joint between the skull and '''hyoid'''
****Strenghten the area over the discs
****Strenghten the area over the discs
=='''Synovial Joints'''==
==Synovial Joints==
*Articulating joints are separated by a fluid-filled joint cavity, which is bounded by a synovial membrane
*Articulating joints are separated by a fluid-filled joint cavity, which is bounded by a synovial membrane
**Synovial membrane: pink connective tissue sheet, vascular and sensitive
**Synovial membrane: pink connective tissue sheet, vascular and sensitive
==Links==
==Links==
*[[Joints|Joint Pathology]]
*[[Joints|Joint Pathology]]
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