Exam 3: Lecture 11 Flashcards
What are the 3 classifications of joints?
Cartilaginous (amphiarthroses)
Fibrous (synarthroses)
Synovial (diarthroses)
What is the definition of a joint?
Place where two bones come together
What are the characteristics of cartilaginous bone?
Bones joined by hyaline or fibrocartilage
Two type:
1) Symphysis
2) Synchondrosis
What are 2 examples of symphysis cartilaginous joints?
Joined by fibrocartilage
EX: Intervertebral discs & pubic symphysis
What are the characteristics of fibrous joints?
Bones joined by collagenous and/or elastic fibrous CT Three types: 1) Suture 2) Syndesmosis 3) Gomphosis
What are examples of suture fibrous joints?
Joints between bones of calvaria
What are examples of gomphosis fibrous joints?
“peg-in-socket” joint: teeth in alveoli
What are examples of syndesmosis fibrous joints?
Bones joined by interosseous fibrous membrane
EX: Tibia/fibula & Ulna/radius
What are examples of synchondrosis cartilaginous joints?
Joined by hyaline cartilage
EX: Epiphyseal plates & first sternocostal joint
What are the characteristics of synovial joints?
Moveable joints exemplified by connective tissue capsule surrounding fluid-filled space
Reinforced by thickenings of outer part of capsule referred to as ligaments
Ligaments stabilize joint/capsule and control/restrict direction and ROM
What are the 3 types of synovial joints?
Monaxial
Biaxial
Triaxial
What are monaxial synovial joints?
Allow movement in one plane
Hinge Joints: Humeroulnar/radioulnar joints
What are biaxial synovial joints?
Allow movement in two planes
Condyloid joints: metacarpophalangeal/atlantoocciptial joints
Saddle joints: first carpometacarpal joint
What are triaxial synovial joints?
Allow movement in three planes
Ball-and-socket: glenohumeral/femoroacetabular joints
What are the 5 components of the synovial cavity?
1) Articular cartilage
2) Joint capsule
3) Synovial membrane
4) Synovial fluid
5) Synovial cells