Across
- 2. This system supports the body, protects organs, produces blood cells, and stores minerals like calcium.
- 4. This system forms a protective barrier, helps regulate temperature, and includes skin, hair, and glands.
- 5. This system uses a double-loop circuit (pulmonary and systemic) to move gases, nutrients, and wastes through the body.
- 7. This system sends electrical signals using neurons and is divided into central and peripheral parts.
- 10. This system includes voluntary and involuntary muscle types, but only one type allows conscious movement.
- 11. This system returns excess tissue fluid to the bloodstream and plays a major role in immune defense.
Down
- 1. In this system, gas exchange occurs in alveoli where oxygen enters the blood and carbon dioxide exits.
- 3. This system regulates body processes using hormones that travel through the bloodstream.
- 6. This system produces gametes and enables reproduction to continue the species.
- 8. This system filters blood, balances pH, and removes nitrogenous waste through urine production.
- 9. This system uses both mechanical and chemical processes to break food into molecules the body can absorb.