Human skeletal system consists of skull, backbone, ribs and limbs.

Answer

### Step-by-Step Solution:

1. **Identify the Components of the Human Skeletal System**:
- The human skeletal system is primarily made up of bones and cartilage. The main components include the skull, backbone, ribs, and limbs.

2. **Understand the Function of the Skeletal System**:
- The skeletal system provides support and strength to the body. It also protects vital internal organs and gives shape to the body.

3. **Examine Each Component**:
- **Skull**: Protects the brain and forms the structure of the face.
- **Backbone (Vertebral Column)**: Supports the body and protects the spinal cord.
- **Ribs**: Protect the heart and lungs and form the rib cage.
- **Limbs**: Include the arms and legs, allowing for movement and interaction with the environment.

4. **Conclude the Statement**:
- The statement that the human skeletal system consists of the skull, backbone, ribs, and limbs is true, as these components are essential parts of the skeletal system.

5. **Final Confirmation**:
- Since all mentioned components are indeed part of the human skeletal system, we can confidently state that the statement is correct.