Ch.10 Joints Flashcards
List and descirbe the functional classification of joints Provide examples.
- Synarthrosis
- immoveable joint
- Amphiarthrosis
- sighly moveable joint
- ex: pubic symphysis
- Diarthrosis
- freely moveable joint
- eg: knee, arm
List the structural classificaions of joints
- Fibrous Joint
- held together by Collagen CT
- Ex: sutures of skull bones
- Cartilaginous Joint
- held together by cartilage
- ex: pubic symphysis
- Synovial Joint
- contains synovial cavity
- found btwn 2 bones of a forming joint
- synovial fluid
- located in synovial cavity
- supplies nutrients to articular cartilage and lubes to decrease friction
- Articular capsule
- joins bones together
- encolses synovial cavity
- Ligament
- dense irregular CT
- Stabilizes joint with muscle of region
- Diarthrosis joints
- contains synovial cavity
Describe cartilaginous joints and provide an example
- held together by cartilage
- pubis symphysis
Describe Fibrous Joints and provide an example
held together by Collagen CT
Ex: sutures of skull bones
Describe a synovial joint.
- contains synovial cavity
- found btwn 2 bones of a forming joint
- synovial fluid
- located in synovial cavity
- supplies nutrients to articular cartilage and lubes to decrease friction
- Articular capsule
- joins bones together
- encolses synovial cavity
- Ligament
- dense irregular CT
- Stabilizes joint with muscle of region
- Diarthrosis joints
What are the angular movements at joints
- gliding
- flexion
- extension
- hyperextension
- abduction
- adduction
- circumduction
- rotation
- elevation
- depression
Describe the angular joint movement gliding
- movement of flat bone surfaces
- side to side and back and forth
- little change in angle btwn the bones
Describe the angular joint movement Flexion
- decrease in angle
Describe the angular joint movement extension
- increase in angle
Describe the angular joint movement hyperextension
increase in angle beyond anatomical position
Describe the angular joint movement abduction
away from the midline
Describe the angular joint movement adduction
towards the midline
Describe the angular joint movement circumduction
flexion, abduction, extension, adduction in succession. The distal end of the body part moves in a circle
Describe the angular joint movement rotation
movement of a bone around its longitudinal axis. In the limb it can be medial or lateral
Describe the angular joint movement elevation
upward movement of body part