musculo-skeletal system Flashcards
types of joints
- fibrous
- cartilaginous
- synovial
joints
- necessary for muscles to lever bones creating movement
- formed when 2 + bones meet
- classified by how much movement they allow
ball and socket
- allows movement in all directions
articulating bones of hip
- femur
- pelvis
articulating bones of shoulder
- humerus
- scapula
hinge joint
- allows movement in 1 direction
- ankle, knee, elbow
articulating bones of ankle
- talus
- tibia
-fibia
articulating bones of knee
- femur
- tibia
articulating bones of elbow
- humerus
- radius
- ulna
articulating definition
the bones that meet and move at the joint
planes
- saggital
- frontal
- transverse
sagittal plane
- vertically
- divides body into right and left
- squatting
frontal plane
- vertical plane
- divides body into front and back
- start jump
transverse plane
- divides body into upper and lower halves
- spinning
axis
- transverse
- sagittal
- longitudinal
transverse axis
side to side across the body
sagittal axis
front to back
longitudinal axis
top to bottom
joint actions in the sagittal plane about transverse axis
- flexion
- extension
- hyperextension
- plantar-flexion
- dorsi-flexion
flexion
decreasing the angle between the bones of a joint
extension
increasing the angle between the bones of a joint
plantar-flexion
pushing up on your toes
dorsi-flexion
pulling the toes up to the shin
hyper-extension
increasing the angle beyond 180 between bones of a joint