Skeleton & Muscular System Flashcards
1
Q
How many bones in the body?
A
Adult = 206 bones Children = way more
2
Q
Cartilage
A
- acts as a shock absorber
- allow limited movement
- stops bones rubbing off each other
3
Q
Joint
A
Where two bones meet
4
Q
Fused joint
A
Does not allow bones to move
E.g. Skull
5
Q
Synovial joints
A
Allow bones to move
- Ball and Socket e.g. hip
- Hinge e.g. elbow
6
Q
Ball and socket joint
A
Allows movement in several directions e.g. hip and shoulder
7
Q
Hinge joint
A
Allows movement in one place only e.g. knee, elbow, jaw, knuckles
8
Q
Synovial fluid
A
Acts as a shock absorber - allowing bones to move and prevent friction
9
Q
Ligaments
A
Tough elastic fibres hold the bones together
10
Q
Tendons
A
Muscle to bone
11
Q
Antagonist pair
A
Muscle can only contract get (shorter) - they can only pull bones
The biceps contracts to pull up the lower arm. The triceps contracts to pull the arm down
12
Q
Functions of the skeleton
A
- to support the body
- to allow movement
- to protect delicate organs
