Exm 2 (ch 9) Flashcards
a point of contact between:
• Two or more bones
• Cartilage and bone
• Teeth and bone
(Also called articulation)
A joint
Structural classification of joints
Fibrous, cartilaginous, and synovial
no joint cavity, articulating bones held together by dense irregular connective tissue rich in collagen. Permits little to no movement. Types: Sutures (suture bones of the skull) and Syndesmoses of
tibia/fibula joint, gomphosis (Joint between mandible and teeth)
Fibrous
no joint cavity (lack synovial cavity), articulating bones held together by hyaline cartilage (Synchondrosis), (synchondroses- epiphyseal growth plate) or fibrous cartilage (Symphysis- pubic symphysis). Permits little to no movement. Ex: Pubic symphysis and epithelial growth plate
Cartilaginous
have articular capsule, characterized by synovial cavity and articular cartilage; may contain accessory ligaments, articular discs and bursae. Articulating bones are covered with articular cartilage, held together by ligaments, contain synovial fluid, have a nerve and blood supply , and are surrounded by an articular capsule
• Synovial fluid is made of lymph and hyaluronic acid
Permits a large range of movement
Synovial (have a capsule)
sac-like structures filled with
synovial fluid that cushion movement of one body part over another
Bursae
a tube-like bursae that wraps around tendons subject to a great deal of friction. Provides lubrication
Tendon sheaths
Degree of movement 
Synarthroses, amphirthrosis, diarthroses
virtually no movement
• Ex: sutures between skull bones
Synarthroses
limited movement
Amphiarthroses
free movement, synovial joints, capsule has dense fibrous outer layer
Diarthroses
• Synchondrosis – bones connected by hyaline cartilage in the epiphyseal plates
Synarthroses
• Synostosis when calcification is complete
Synarthroses
• Pubic symphysis
Amphiarthroses
• Syndesmosis of tibia/fibula (more fibers than suture but not as tight)
Amphiarthroses
• Gomphosis – cone-shaped peg in tooth socket (also fibrous) – shock absorption!
Amphiarthroses