3) Skeletal system

Question 1

Functions of the skeletal system

Answer 1

1) Movement
2) Support
3) Protection
4) Production of red blood cells
5) Mineral storage
6) Attachment of muscles

Question 2

Role of joints and connective tissues

Answer 2

Connective tissues consist of ligaments, cartilage and tendons.
A joint is held together by ligaments which give the joints their stability.
Cartilage is found at the ends of bones and where joints meet.
Tendons attach muscles to the skeleton.

Question 3

Synovial joints

Answer 3

Freely movable joints
Have synovial fluid in the join cavity, lubricating the joint so it moves smoothly
End of bones covered in Cartilage

Question 4

Ligaments

Answer 4

The bones in a synovial joint are connected by ligaments

attach bone to bone
act to give stability to joints
are tough, white and inelastic

Question 5

Tendons

Answer 5

attach muscle to bone

carry the force from muscle contraction to the bone

are tough, greyish and inelastic

Question 6

Types of synovial joints

Answer 6

Hinge
Ball and socket
Pivot

Question 7

Types of joint movement

Answer 7

Flexion
Extension
Abduction
Adduction
Circumduction
Rotation

Question 8

Flexion

Answer 8

Angle of join decreases

Ball and socket
Hinge

Question 9

Extension

Answer 9

Angle of join increases

Ball and socket
Hinge

Question 10

Abduction

Answer 10

Movement away from the midline of the body

Ball and socket

Question 11

Adduction

Answer 11

Movement towards the midline of the body

Ball and socket

Question 12

Circumduction

Answer 12

Limb moves in a circle

Ball and socket

Question 13

Rotation

Answer 13

Limb moves in a circular movement around a fixed joint towards or away from the midline of the body.

Ball and socket
Pivot