Joints

Question 1

What is a joint

Answer 1

A joint is a place where two or more bones meet

Joints are important for movement and rotation

All joints allow movement, although the extent of the and freedom of the movement varies from joint to joint

Question 2

Pivot joint

Answer 2

Pivot joint allows bones to rotate. In a pivot joint, one bone shaped like a cylinder rotates inside another bone or ligament that makes a ring round it. You have three pivot joints in your :in your wrist, elbow

Question 3

Hinge joints

Answer 3

A hinge joint is a joint that allows only backward and forwards motion - just like the hinge on a door. There are three hinge joints: the knee, elbow and ankle.

Question 4

Ball and socket joints

Answer 4

In a ball and socket joint, the rounded head of a long bone (the ball) fits into a cup shaped hole (the socket). Both the hip and the shoulder joints are ball and socket joints.

Question 5

Condyloid joints

Answer 5

A Condyloid joint is similar to a ball and socket joint, but the ball rests against the end of a bone, rather than inside a socket. This allows circular motion