Human Skeletal System: Essential Facts and Anatomy

1. How Many Bones Are in the Skeletal System?

206

2. What Is the Largest Bone in Your Body?

Femur

3. Which Job of the Skeletal System Is Like a Factory?

Storing calcium and other minerals.

4. What Are the Skeletal System’s Two Minor Jobs?

To make blood cells and store calcium.

5. The Place Where Two or More Bones Meet Is Called…

Joint

6. The Part of the Bone Where Blood Cells Are Made Is Called…

Marrow

7. These Connect Bones to Muscles:

Tendons (Note: Ligaments connect bone to bone).

8. The Ribs, Sternum, and Spine Protect These Organs:

Lungs, heart, and blood vessels.

9. What Is the Hyoid?

The only floating bone in the skeleton.

10. Skeletal System Components

• Bones: Babies are born with more than adults.
• Ligaments: They connect bone to bone.
• Cartilage: It prevents bones from rubbing against each other.
• Minerals: Calcium is the most plentiful one.
• Connective tissue: Made of collagen to withstand bumps.
• Marrow: Two types found inside the bone.

11. Label the Bones Correctly

Skull, mandible, clavicle, scapula, sternum, rib, humerus, vertebrae, radius, ulna, pelvis, sacrum, coccyx, pubis, carpals, metacarpals, phalanges, femur, patella, tibia, fibula, tarsals, metatarsals, phalanges.

12. Label the Skull Bones

Frontal, Parietal, Occipital, Temporal, Ethmoid, Sphenoid.

13. Five Main Functions of the Skeletal System

• Protection: Provides protection to organs such as the brain.
• Storage: Stores important minerals such as calcium.
• Blood Cell Production: Red marrow produces red and white blood cells.
• Movement: Enables physical movement alongside muscles.
• Support: Makes it possible to sit and stand.

14. Types of Skeleton

• Axial: Protects internal organs (e.g., skull, vertebrae, and ribs).
• Appendicular: Allows body movement (e.g., shoulders, arms, pelvis, and legs).

15. Classification of Joints

• Structural Classification: Fibrous, Cartilaginous, Synovial.
• Functional Classification: Movable, Slightly Movable, Immovable.