The thumb (great toe) of the foot is called:

$A$: Tibia is stronger and is present medially,whereas fibula is the outer and slender bone of the lower leg or shank.
$R$: Tibia has a sharp crest in the shaft and a projection on the inner side of the ankle called the lateral malleolus.

What is the acromion process?

Each human limb is made of (in $bones$)

The cup-shaped cavity for the articulation of the head of the femur is called:

In mammals,each half of the pelvic girdle consists of: