Flashcards
Classification of Joints
Cards in this deck (19)
- 1What are the purposes of joints?-Give skeleton mobility
-Hold skeleton together - 2How are joints classified?By both their structure (material binding bones, presence of joint cavity) and their function (amount of movement allowed at joint).
- 3What are the functional classifications of joints?-synarthroses
-amphiarthroses
-diarthroses - 4SyntharthrosesImmovable joints
- 5AmphiarthrosesSlightly movable joints
- 6DIarthrosesFreely movable joints (all synovial joints)
- 7What are the structural classifications of joints?-Fibrous
-Cartilaginous
-Synovial - 8SutureFibrous joint occurring between bones of the skull. Bound tightly together by connective tissue, but allows growth in youth
- 9SyntosesProcess of sutures ossifying fibrous tissue and fusing into a single unit
- 10SyndesmosesBones connected by a ligament, cord/band of fibrous tissue. Amount of movement is determined by the length of the fibrous tissue.
- 11GomphosisPeg-in-socket fibrous joint. Only example is tooth in socket, connected to periodontal ligament.
- 12SynchondrosesCartilaginous joints united by hyaline cartilage. All are synarthrotic. Ex. epiphyseal plates
- 13SymphesesCartilaginous joints where bone ends are covered in hyaline cartilage and attached by pad of fibrocartilage, ex. pubic symphysis
- 14Synovial jointsJoints containing a cavity filled with synovial fluid for lubrication
- 15General Structure of Synovial Joints-Articular Cartilage
-Joint (Synovial) Cavity
-Articular Capsule
-Synovial Fluid
-Reinforcing Ligaments - 16Articular CapsuleContains two layers; fibrous capsule is the external layer and is made of dense irregular CT for strength, synovial membrane is inside and made of loose CT.
- 17Synovial FluidMade mainly by filtrations from blood. Lubricates joints. Mechanism of lubrication is called "weeping lubrication."
- 18Friction-Reducing Structures-Bursae, flattened fibrous sacs lined with synovial membrane and containing thin film of synovial fluid
-Tendon Sheath- essentially an elongated bursa wrapped around a tendon - 19What impacts the stability of joints?1. Articular surface- often shallow, makes joint less stable
2. Ligaments- stop excessive/undesirable movement
3. Muscle Tone- includes muscle tendons crossing joints and tendons that are kept tight, adds greatly to stability
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- High School Anatomy & Physiology (Joints) Flashcards on Classification of Joints, created by Rebecca Piscia on 07/01/2015.
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- Rebecca Piscia
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