Question
Which type of joint is involved when you bend your knees and ankles?
(i) Ball and socket
(ii) Hinge
(iii) Pivot
Answer
When we bend our knees and angles, it is bend in one direction only that is bending and straightening. so hinge joint is involved in it.
It is similar to hinge of our door that allows movement mainly in in one direction.
Explanation
1. Ball and socket : Movement in many direction like our shoulder and hip.
2. Hinge : The movement is mainly in one direction like our knees and ankles.
3. Pivot : It is the movement around an axis like our neck.
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