81015
Descrição
Mapa Mental por Emma Boxley, atualizado more than 1 year ago
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Criado por Emma Boxley
mais de 11 anos atrás
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Movement
- Skeleton
- It is there for:
- Support
- Protection
- Movement
- Protection of vital organs
- Structure of the body
- Support
- Bones are shaped like tubes
- The middle is filled with marrow
- The middle is filled with marrow
- It is there for:
- Joints
- Bones are attached to other bones via
ligaments (slightly elastic)
- A smooth layer of cartilage prevents
the wears of surfaces in contact
- Shock Absorbant
- Shock Absorbant
- A small amount of liquid (synovial
fluid) reduces friction
- Types
- Hinge
- knee, wrist, elbow
- knee, wrist, elbow
- Ball + socket
- Shoulder, Hip
- Shoulder, Hip
- Partly movable
- vertebrae in your spine
- Can only move slightly
- vertebrae in your spine
- Fixed
- Skull
- No movement whatsoever
- Skull
- Hinge
- Bones are attached to other bones via
ligaments (slightly elastic)
- Muscles
- Muscles can only contract
- This makes them get shorter
- This makes them get shorter
- They have antagonistic pairs
- e.g one muscle relaxes, the
other contracts
- Examples
- Biceps and Triceps
- Bending the arm
- Biceps contracts
- Triceps relaxes
- Biceps contracts
- Straightening the arm
- Triceps contracts
- Biceps relaxes
- Triceps contracts
- Holding the arm rigid
- Both Biceps and Triceps contracts
- Both Biceps and Triceps contracts
- Bending the arm
- Biceps and Triceps
- e.g one muscle relaxes, the
other contracts
- Muscles are attached to the
bone by non-elastic tendons
- Muscles can only contract
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