Which bone connects the upper and lower body?

Which bone connects the upper and lower body?

• A. Spine
• B. Pelvis
• C. Sternum
• D. Clavicle

Answer: (A)

The spine acts as the central connector between the upper and lower parts of the body. It runs from the skull down to the pelvis, forming the main axis that supports the head and rib cage above and transfers weight down to the legs below. The vertebral column, with the sacrum at its base, links the upper body to the pelvic region, enabling upright posture and movement. The other options have different roles: the pelvis anchors the lower limbs to the spine, the sternum is part of the front of the rib cage, and the clavicle connects the arm to the trunk, but none serve as the primary bridge between upper and lower body in the same way the spine does.

The spine acts as the central connector between the upper and lower parts of the body. It runs from the skull down to the pelvis, forming the main axis that supports the head and rib cage above and transfers weight down to the legs below. The vertebral column, with the sacrum at its base, links the upper body to the pelvic region, enabling upright posture and movement. The other options have different roles: the pelvis anchors the lower limbs to the spine, the sternum is part of the front of the rib cage, and the clavicle connects the arm to the trunk, but none serve as the primary bridge between upper and lower body in the same way the spine does.