Question

Which one of the following is not a bone of the human leg?
(a) Fibula
(b) Femur
(c) Humerus
(d) Tibia

Answer 1

Hint: Both the arms and leg of bone consist of sixty bones, thirty in arms from upper arms to finger and thirty in legs from thigh to toe. Both the Femur and Humerus are the longest bone, one which lies in the upper arm whereas one lies in the thigh.

Complete answer:
The human leg consists of thirty bones, femur in thigh, patella in knee, tibia and fibula in lower legs, tarsals in ankles, metatarsals in the sole and phalanges in toe. The bones of the arm consist of the humerus in upper arms, radius and ulna in forearm, carpals in the wrist, metacarpals in palm and phalanges in fingers. As humerus is present in the arm, therefore, it is not the bone of the human leg.

Additional Information:
The hind limb and forelimb both provide strength to the body and make the body effective for working. The strongest bone of the body is the femur which bears all weight of the body and also it is the heaviest and longest bone. The calcaneus is the longest bone in the heel and it helps to balance the body and also protect the remaining tarsal bone.

So, the correct answer is 'Humerus'.

Note:
The number of bones in the forelimb and the hind limb is the same but there is a difference in the arrangement like one extra bone patella is present in the knee which gets balanced by one extra bone present on the carpel on the wrist as compared to the tarsal region of the ankle.