The longest bone in the human body is:

[ A ]    Femur
[ B ]    Humerus
[ C ]    Ulna
[ D ]    Tibia
Answer : Option A
Explanation :
Femur.The femur or thigh bone, is the most proximal (closest to the center of the body) bone of the leg in tetrapod vertebrates capable of walking or jumping, such as most land mammals, birds, many reptiles such as lizards, & amphibians such as frogs. The femur is the largest bone in the human body. In vertebrates with four legs such as dogs & horses, the femur is found only in the rear legs. The head of the femur articulates with the acetabulum. By most measures the femur is one of the strongest bones in the body.
General Science MCQ Questions and Answers for competitive exams

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