Question

which smaller part of our body make our leg​

Answer 1

The leg from the knee to the ankle is called the crus or cnemis /ˈniːmɪs/. The calf is the back portion, and the tibia or shinbone together with the smaller fibula make up the front of the lower leg.

Answer 2

Answer:

$\huge\underline\pink{\tt Hey\:Mate}$

$\huge\underline\green{\tt Ur\:Answer\:is\:Fibula}$

The fibula is the smaller bone towards the back of the leg