Skeleton And Muscular System

Question 1

How many bones in the body

Answer 1

Adult = 206
Children = way more

Question 2

Cartiliage

Answer 2

Acts as a shock absorber . Allow limeted Movement. Stops bones rubbing off eachother

Question 3

Joint

Answer 3

Joints are places where two bones join together

Question 4

Fused joint

Answer 4

Do not allow bones to move . Appear as if they are stitched together e.g skull

Question 5

Synovial joints

Answer 5

Allow bones to move
Two different types of synovial joints
- ball and socket joint
- hinge joint

Question 6

Ball and socket joint

Answer 6

Allows movement in several directions e.g hip and shoulder

Question 7

Hinge joint

Answer 7

Allows movement in one plane only - knee , elbow , jaw , knuckles

Question 8

Synovial joint

Answer 8

It contains a lubricating fluid called synovial fluid

Synovial fluid acts as a shock absorber - allowing bones to move and prevent friction

Question 9

Ligaments

Answer 9

Tough , elastic fibres hold the bones together

Question 10

Tendons

Answer 10

Anchor muscle to bone

When the muscle contracts the joint and tendons bend and the bone moves

Question 11

Antagonistic pairs

Answer 11

Muscles can only contract (gets shorter ) they can only pull bones .
The biceps contracts to pull up the lower arm . The triceps contracts to pull the arm down -> antagonistic pair if muscles

Question 12

Functions of the skeleton

Answer 12

To support the body
To allow movement
To protect delicate organs