what are the three types of joints? | fibrous, cartilaginous, synovial joints |
fibrous joints | -Dense fibrous connective tissue
-High tensile strength
-Little movement in adults
-example include cranial sutures, periodontal ligaments (teeth) and interrouseus membranes (between bones) |
primary cartilaginous | -Allow for bone growth
-Disappear in adults
-No movement
-examples include epiphyseal growth plate |
secondary cartilaginous joint | -Do not ossify with age
-Found in midline of body
-Limited movement
-examples include intervertebral discs |
synovial joints | -greatest movement
-may also contain -ligaments and articular discs |
name 6 different types of synovial joints | hinge, saddle, plane, pivot, condylar, ball and socket |
Flexion/extension | flexion/ extension |
pronation/supination | rotation of limb ect (can occur with feet as well) |
Dorsi-/plantarflexion | felxion and extension of foot |
Lateral/medial rotation | rotating towards and away from the middle line |
abduction/adduction and circumduction | adding and moving away from body and circular rotation of limb by joint |
what is hiltons law? | that the nerve doesn't just act on the muscle, if it crosses a joint it also innovates this too |