Bones, joints & movement Flashcards
5 functions of the skeletal system?
- protection of vital organs
- mineral storage
- blood cell production
- joints for movement
- muscle attachment
4 classifications of bones?
- long bones
- short bones
- flat bones
- irregular bones
Stages of the spine?
- Cervical
- Thoracic
- Lumbar
- Sacrum
- Coccyx
4 classifications of joints?
- pivot joint
- hinge joint
- ball and socket joint
- condyloid joint
Flexion?
The angle at the joint is decreased
Extension?
The angle at the joint is increased.
Joint?
A joint is where two bones meet.
Synovial joints?
Freely movable joints
Abduction?
which joints?
Limb is moved away from mid line of body.
- ball and socket or condyloid joint
Adduction?
which joints?
Limb is brought back to the mid line of the body.
- ball and socket or condyloid joint
Rotation?
which joints?
Twisting action
-at pivot or ball and socket joint
Circumduction?
which joints?
Drawing circle in the air
-at ball and socket or condyloid joints
Dorsi-flexion?
where?
Toes raised towards shin
Only at ankle
Plantar-flexion?
where?
Toes pointed away from shin
only at ankle
Ligaments?
Bone to bone
tough and slightly elastic
