CE Biology: location of area in the brain

CE Biology:the degrees of movement of vertebral column and a joint in relation to their structure

Compare the degrees of movement of vertebral column and a joint in relation to their structure?

(6 marks)

Vertebral column is made up of many pieces of vertebrae.	1
Intervertebral discs lie between adjacent vertebrae in the spine. Each disc forms a cartilaginous joint to	1
allow slight movement of the vertebrae, and acts as a ligament to hold the vertebrae together.	1
A joint is a junction where two or more bones meet together.	1
At the joint, the bones are held together by tough sheets of elastic fibres called ligaments.	1
As they are elastic, the bones can moved with a larger degree of movement in a controlled way at the joint.	1

CE Mathematics: Polar coordinate

Q=(a,b)

polar coordinate of Q=(SQRT(a^2+b^2), tan^-1(b/a) degree)