Ch.9 --- A

Notes

Ch.9 --- Articulations (Joints) The vocabulary in chapter is difficult, but it will be easier with the understanding of some medical terms Root Words/ Prefixes Definition Osteo- Bone Arthro- Joint Chondro- Cartilage Syn- Together Amphi- Slight Dia- Through What is a synostosis? The fusion of two or more bones What is a synchondrosis? An immovable cartilaginious joint where two bones are joined by hyliane cartilage, often serving as growth site in developing bones Classification of Joints Joints can be classified in two ways: Joints are where two bones come together A. Functional classification: amount of movement 1. Synarthrosis: joint with no movement Example: Suture, gomphosis (tooth om socket), synchondrosis, synostosis 2. Amphiarthrosis: joint with slight movement Example: Symphysis pubis, Syndesmosis (for example, distal tibia- fibula) 3. Diarthrosis: freely moving joint Example: Most joints such as the elbow, knee, interphalangeal joints, shoulder, hip, etc. B. Structural classification: type of tissue between the articulating bones 1. Fibrous tissue: Suture, gomphosis, syndesmosis 2. Cartilaginous tissue: symphysis & intervertebral (fibrocartilage), epiphyseal plate, ribs & ...