MCQ Detailed View

The tibia is a major long bone of the human leg, located in the lower limb. It is commonly known as the shinbone and is the second largest bone in the human body, after the femur (thigh bone). The tibia plays a crucial role in supporting body weight and allowing movement, such as walking, running, and jumping.The tibia is found on the inner side of the lower leg, running parallel to another bone called the fibula, which is thinner and located on the outer side. The tibia connects the knee joint to the ankle joint, forming a strong framework that supports the entire body during standing and locomotion.

Key functions of the tibia:

1. 
   

   Weight-bearing: Transfers most of the body’s weight from the femur to the foot.

   
   


2. 
   

   Movement: Works with muscles and joints for mobility and stability of the leg.

   
   


3. 
   

   Protection: Shields important nerves and blood vessels in the lower limb.

   
   


4. 
   

   Bone marrow storage: Contains marrow involved in the production of blood cells.

   
   

Explanation of incorrect options:

• 
  

  Skull: Protects the brain but does not include the tibia.

  
  


• 
  

  Arm: Main bones are humerus, radius, and ulna.

  
  


• 
  

  Face: Contains facial bones like mandible and maxilla, not tibia.

  
  

The tibia is highly prone to fractures due to its weight-bearing role and exposure in the front part of the leg. Proper calcium intake and exercise strengthen bones and reduce fracture risks.

In conclusion, the tibia bone is located in the leg, making option C (Leg) the correct answer to this biology MCQ.