Joints And Joint Actions

Question 1

What is a joint

Answer 1

Where two or more bones meet

Where movement takes place

Question 2

Most freely moveable joint

Answer 2

Synovial

Question 3

Three connective tissues

Answer 3

Tendons
Cartilages
Ligaments

Question 4

Tendon

Answer 4

Non elastic

Joins muscle to bone

Allow movement to take place

Question 5

Ligaments:

Answer 5

Bone to bone
Holds joint
Elastic

Question 6

Cartilages:

Answer 6

Elastic

Found at end of bone and in between

Protects bone from wear and tear

Reduces friction

Question 7

Two main joint types

Answer 7

Hinge

Ball and socket

Question 8

Synovial joint

Answer 8

Bursae: reduce friction in joint
Acts as cushion between bones and other parts of joint e.g. tendons muscles

Synovial fluid: reduce friction allow to move freely end joints

Joint capsules: surround synovial fluid
Attached to outer layer of bones forming joint

This seals joint and provides stability

Question 9

What is flexion

Answer 9

Angle at joint decreases

Question 10

What is extension

Answer 10

Angle at joint increases

Question 11

Examples of flex and extension

Answer 11

Pulling weight away and towards

Bending leg

Moving leg behind body