Question

Identify the longest bone in the human body.

• A. Sternum
• B. Wrist bones
• C. Femur
• D. Stirrup

Answer 1

The correct option is (D):

Explanation of the correct option:

1. ​Femur is the bone extending from the pelvic girdle to the knee, which means the entire region of the thigh.
   
2. Femur is the longest and strongest bone of the body.
   

Explanation of the incorrect options:​

Option (A):

1. Sternum or breast bone is the region where most of the ribs are connected.
   
2. It is present towards the front of the thoracic cavity.
   

Option (B):

1. ​Wrist bones are not the longest bones of the body.

Option (C):

1. ​Stirrup is another name for stapes, which is one of the ear ossicles.
   
2. Stapes is present in the middle ear and it is the smallest bone present in the body.
   

Final Answer: Femur is the longest bone of the body.