CORE 2 'The body in motion' Flashcards
Skeletal System Functions
F- framework/ support network for the attachment of muscles
P- protection of internal organs
R- red blood cell production within bone marrow
A- attachment of muscles and tendons
M- allows movement to occur when muscles contract
S- a storage house for minerals such as calcium
Anatomical Position
The individual stands facing frontwards with palms facing forwards
Superior
Towards the head
Inferior
Away from the head
Anterior
Towards the front of body
Posterior
Towards the back of the body
Medial
Towards midline of body
Lateral
Away from midline of body
Proximal
Towards the body
Distal
Away from body
Types of joints
- Fibrous/Fixed or immovable - such as joints found in the skull
- Cartilaginous or slightly moveable - such as the vertebral column
- Synovial or freely movable - such as those found in limbs
Synovial Membrane
The lining around the outside of the joint
function: encloses the synovial fluid
Synovial fluid
Fluid in the joint capsule
function: to absorb shock and reduce friction
Tendons
Straps that surround a joint
function: to attach muscles to bones
Ligaments
Straps that surround a joint
function: to hold bone to bone and prevent dislocation
Cartilage
A slightly hard, rubbery substance
function: to prevent the bones rubbing together
Flexion
bending or decreasing the angle at a joint
movement example: elbow flexing upward phase of bicep curl
Extension
straightening or increasing the angle at a joint
movement example: straightening knee when kicking a ball
Adduction
moving a body part towards midline
movement example: bringing legs together in second part of star jump
Abduction
moving body part away from midline
movement example: moving legs apart in star jump
Circumduction
moving a joint in a circular motion
movement example:arm action in freestyle
Rotation
twisting or turning a bone along its axis
movement example: ballet dancer preforming turns
Dorsiflexion
moving toes towards the shinbone (only takes place at ankle)
movement example: pulling toes towards tibia when preforming hamstring stretch
Plantaflexion
moving toes away from shinbone (only takes place at ankle)
movement example: pointing toes towards ground
Supination
palms facing up
Pronation
palms facing down
Inversion
sole of foot rotating inwards
Eversion
sole of foot rotating outwards