Joints Flashcards
Bony joints
Two fused bones
Synostosis (no movement)
Example: mandible, frontal bones, epiphysis/diaphysis
Fibrous joints
Bound by collagen fibers
Synarthrosis (little movement)
1. Sutures
2. Gomphoses
3. Syndesmoses
Sutures
Between cranial bones
Gomphoses
Tooth and mandible
Tooth and maxilla
Syndesmoses
Slightly moveable
Hold two bones next to each other
Example: ulna/radius; tibia/fibula
Cartilaginous joints
Cartilage holds the bones together
Amphiarthrosis (moderate movement)
1. Synchondroses
2. Symphyses
Synchondroses
Bones bound by hyaline cartilage
In children btw diaphysis and epiphysis; btw first rib and sternum
Symphysis
Bones bound by a thick layer of fibrocartilage
Pubic symphysis; intervertebral disks
Synovial joints
Common
Fluid filled cavity that connects bones. Surrounded by a joint capsule
Diarthrosis (freely moveable)
Joint cavity
Fluid filled cavity that connects the bones
Joint capsule parts
Outer- fibrous capsule holds together and holds fluid
Inner- produces synovial fluid
Accessory structures
Tendons
Ligaments
Bursa
Tendons
Attach muscle to bones
Ligaments
Bone to bone
Bursa
Fluid filled sac that cushions and alleviates rubbing
