Musculoskeletal Flashcards
articular structures
joint capsules, cartilage, synovium and synovial fluid
extra-articular structures
periarticular ligaments, tendons, bursae, muscle
ligaments
ropelike bundles of collagen fibrils that connect bone to bone
tendon
collagen fibers connecting muscle to bone
bursae
pouches of synovial fluid that cushion the movement of tendon and muscles over bone or other joint structures
3 types of joints
synovial, cartilaginous and fibrous
3 types of synovial joints
spheroidal, hinge, condylar
spheroidal joints are what kind of joint and function
synovial joint, ball and socket flex
Hinge joints are what kind of joint and function
synovial joint, motion 1 way- flexion and extension ex. elbow
condylar joints are what kind of joint and function
synovial joint, 2 surfaces, knee and mandible
Cartilaginous joint examples
spine and symphones pubis
Fibrous joint example
skull but unable to move
extension
limb goes into a straight line
flexion
bending, decreases angle between the bones forming a joint
hyperextension
extreme extension of joint usually by trauma
abduction
movement of limb away from median plane of body (away from body)
adduction
movement of limb toward to the median plane of body (toward body)
circumduction
movement around an axis in a circular motion
Internal rotation
rotation toward the center of the body
external rotation
rotation away from the center of the body
pronation
facing downward or palm facing downward
supination
lying on back, or palm facing upward
inversion
turing inward
eversion
turning outward
retraction
being drawn backward (posterior direction)
protraction
being drawn forward
opposition
thumb reaches across to touch fingers