Arthrology Flashcards
Articulation
Point of contact between two bones or cartilage
Movement determined by:
- Shape of articular surfaces
- Strength & flexibility
- Tension & positioning of muscles & tendons
- Opposition of soft tissue
Classification of joints is based on:
degree of movement
Classification of joints:
- Synarthrosis
- Amphiarthrosis
- Diarthrosis
Structural classification is based on:
What articular surfaces are connected by.
Types of Joints:
- Bony
- Fibrous
- Cartilaginous
- Synovial
Bony Joints a.k.a.
Synostosis
How are bony joints formed?
Formed by ossification of fibrous or cartilaginous joint
Types of Fibrous Joints:
- Sutures
- Gomphoses
- Syndesmoses
Types of Cartilaginous Joints:
- Synchondroses
- Symphyses
Types of Synovial Joints:
- Ball-and-Socket
- Ellipsoid (Condyloid)
- Saddle (Sellar)
- Plane
- Hinge
- Pivot
Fibrous Joints: Sutures
Degree of movement & types
Synarthrotic
Serrate suture, Lap suture, and Plane suture
Serrate suture example
Coronal, sagittal, lamboidal (strongest)
Lap suture example
Squamous
Plane suture example
Palatine process of maxilla (weakest)
Fibrous joints: Gomphoses
Degree of movement and types
Synarthrotic
Tooth to alveolar socket
Ligaments extend from mandible/maxilla to tooth
Fibrous Joints: Syndesmoses
Degree of movement
Examples
Amphiarthrotic
Longer collagen fibers (more mobility)
Ex. Interosseous membrane in radius/ulna & tibia/fibula AND fontanels
Cartilaginous Joints: Synchondroses
Degree of movement
type of cartilage
Synarthrotic
Hyaline cartilage
Costal cartilage (specific to RIB 1)
ex. Epiphyseal plate