Zusammenfassung der Ressource
Chp.8 skeletal and muscular systems
- parts of human skeleton
- diagram
- do not need joints and stermum
- missing collar bone/shoulder blade
- functions of skeleton
- support
- provides rigid base against which muscles pull on
- protection
- types of joints
- fixed/fused joint
- no movement allowed
- bone in skull
- freely moving joints(synovial joints)
- ball and socket
- movement in all directions
- shoulder/hip
- hinge
- movement in one direction only
- elbow/knee
- cartilage covers ends of bones
- produce lubricating liquid(synovial fluid)
- cartilage,tendons,ligaments
- cartilage
- covers and protects ends of bones
- tendons
- connect muscles to bone
- ligaments
- connect bones to bones
- muscles
- made of protien
- can only contract(get shorter)
- work in antagnostic pairs(opposite pairs)
- antagonistic pair of muscles
- biceps and triceps are antagonistic
- triceps contract to lower forearm
- biceps contract to raice forearm