Question

Which is the longest bone in the human body?
A) Humerus
B) Stapes
C) Femur
D) Radio-ulna

Answer 1

Hint:It is the primary bone of the leg that supports the weight of the body on the leg. It is capable of carrying 30 times the weight of the body. It is also called a thigh bone that serves as an attachment point for all the muscles.

 Complete answer:
The longest bone in the human body is femur. It is also called a thigh bone that contains about ¼ of the height of an adult. It is the strongest bone that extends from the hip to the knee. The important features of this bone include head, patellar surface, medial surface, medial and lateral epicondyles, lesser and greater trochanters. Femur can resist the force of 1800 to 2500 pounds. So, it is not easily fractured. This bone is efficient for walking.

Additional information:Humerus is the long bone that connects at the shoulder with the joint and supports many of the arm functions. Stapes is the smallest bone in the human body that is located in the middle ear. It is responsible for transmitting sound waves from air to fluid. Radio and ulna are the two bones that are located in the forearm. It provides supination and pronation at the elbow.

Thus, the correct answer is option C. i.e., Femur.

Note:Femur is the primary, longest and strongest bone in the human that provides support on the leg of the body. Femur is also called a thigh bone that serves as an attachment for all the muscles.