Educational worksheet on body systems with labeling and fill-in-the-blank activities.

- Cell → Tissue → Organ → Organ system → Organism
- Major bones: Skull, Clavicle, Sternum, Ribs, Humerus, Ulna, Radius, Pelvis, Femur, Tibia, Fibula, Phalanges (hands and feet), Vertebrae
- Colour code:
- Bone that is important for support: Femur (or Spine)
- Bone that is important for protection: Rib cage (or Skull)
- Bone that is important for movement: Humerus (or Femur)
- Bone that is important for blood production: Pelvis (or Sternum)
- Fill in the gaps:
- We breathe in to get oxygen into our lungs.
- The oxygen travels from the alveoli in the lungs into the bloodstream.
- The red blood cells carry oxygen around the body.
- Body cells use oxygen in a process called cellular respiration, which releases energy.
- The waste product of respiration (carbon dioxide) is breathed out.
- Label the diagram (arm muscles):
- Biceps (contracts to bend arm)
- Triceps (contracts to straighten arm)
- Label the lungs:
- Trachea
- Bronchi
- Bronchioles
- Alveoli