Bones Joints and Muscles Flashcards
plantar flexion at ankle
Gastrocnemius
movement at the joint in football
flexion
two movements at the shoulder
adduction and abduction
synovial membrane
The synovial membrane makes synovial fluid
synovial fluid
cushions the ends of bones and reduces friction when you move your joints
example: when playing football the synovial fluid lubricates our joints so they don’t seeze up.
joint capsule
provides passive joint stability, limiting the joint range of motion
bursae
reduce friction between tissues of the body
cartilage
shock absorber and allowing bones to slide over one another
ligaments
attaches bone to bone
hinge joint
> elbow
knee
ankle
ball and socket
> hip
> shoulder
skull
cranium
bone in the middle of ribs
sternum
upper arm
humerus
upper leg
femur
knee
patella
ankle
talus
Antagonist
the muscle that relaxes to allow movement to take place
cardiac muscle
muscle that never gets tired eg heart
adduction
movements towards the midline of the body
example: This occurs at the hip and shoulder, returning the arms and legs back to their original position from a jumping jack movement.
extension
to increase length between two bones
example: at the elbow when putting a shot.
flexion
decrease in angle of bones at a joint
example: the elbow flexes when performing a biceps curl.
insertion
the end of the muscle attached to the bone it moves
Involuntary muscle
automatic muscles work on their own
origin
fixed which doesnt move
prime mover
the muscle that causes/produces movement
rotation
movement around the axis
example: This occurs in the hip in golf while performing a drive shot.
abduction
the movement away from the midline of the body
example: This occurs at the hip and shoulder joints during a jumping jack movement.
