Joint Classifications Flashcards Preview

Muscle Anatomy Quiz 1 > Joint Classifications > Flashcards

Flashcards in Joint Classifications Deck (15):
1

Fibrous:

No joint cavity
Fibrous connective tissue

2

Cartilaginous

No joint cavity
Cartilage

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Synovial joint

Joint cavity
•A surrounding articular capsule and often by accessory ligaments.

4

Joints


Functional site where the skeletal and muscular systems interact
•Designed to either promote or limit movement
•Stability and Mobility are influenced by
•The shape of the joint (articular) surface
•The strength of the joint capsule or ligaments
•The strength and orientation of the muscles at the joint
•The greater the mobility the less stability the joint has

5

Joints

Functional site where the skeletal and muscular systems interact
•Designed to either promote or limit movement
•Stability and Mobility are influenced by
•The shape of the joint (articular) surface
•The strength of the joint capsule or ligaments
•The strength and orientation of the muscles at the joint
•The greater the mobility the less stability the joint has

6

Structural classification

based on the presence or absence of a space between the articulation bones (joint cavity) and the type of connective tissue that binds the joint together.

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Functional classification:

takes into account the degree of mobility the joint allows.

8

Synarthrosis

An immovable joint

9

Amphiarthrosis

A slightly movable joint

10

Diarthrosis

A freely movable joint
•Non-axial
•Uniaxial
•Biaxial
•Triaxial

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Fibrous Limited to no movement:

Union through Fibrous Tissue
Suture – Skull
Syndesmosis – band spanning distance between two bones – Radius and Ulna or Tibia and Fibula
Gomphosis –the teeth are held in their tooth sockets in the mandible and maxillae like a nail or bolt

12

Cartilaginous

Union is via cartilage which allows some movement.
Epiphyseal plates – growth plates are found in children to allow for growth
Symphysis – grown together intervertebral disc and pubic symphysis
Synchondrosis – links bone and cartilage and bone again – ribs to sternum

13

Synovial Joint

Greatest amount of mobility comes from synovial joints
Joint capsule – dense connective tissue
Synovial fluid – in the joint, feeds joint surfaces
Joint surfaces – hyaline cartilage
Types
–Gliding (plane)
–Sellar (saddle)
–Spheroidal (ball and socket)
–Trochoid (pivot)
–Condyloid
–Ginglymus (hinge)

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Examples: Structural Classifications

Uniaxial Joints

Hinge (ginglymus)- Humeroulnar
Pivot (trochoid) – atlantoaxial joint

15

Biaxial

Ball and socket -(Spheroidal)- hip
Gliding (Plane) – intercarpal