Zusammenfassung der Ressource
Bones and muscles
- BONES
- adult - 206 bones - conected by
joints
- Our joints are conected by ligaments. The
ends of our bones are conected by cartilage
- 3 types
- Fixed joints
- Not move - The bones of the skull are
conected by fixed joints
- Semi-flexible joints
- Vertebrae - can do some
movements
- Flexible joints
- Can do all movements - the shoulder
and knees are an example of flexible
joints.
- 3 types:
- Short bones
- stability and suport, such as vertebrae -
protect the spinal cord.
- flat bones
- such as sternum/ribs - protect
our internal organs.
- long bones
- In the arms and legs
- The fémur is the longest bone in the
human body.
- MUSCLES
- The human body - 600 muscles.
Nervous system controls - relax and contract.
- 3 types:
- Skeletal muscles
- joint by tendons - voluntary muscles, we can control and
move them.
- smooth muscles
- Organs like, stomach or intestines -
involuntary muscles, automatically -
we can't controls them.
- cardiac muscles
- Makes the heart move and beat