Human Body Systems
Across
- 2. A body system that sends messages through the body using electrical signals
- 5. A body system that provides internal structure and protects delicate organs
- 8. A body system that breaks down food to absorb nutrients into the bloodstream
- 9. A cartilaginous tube that lets air into the lungs
- 11. An organ that filters wastes out of the blood to create urine
- 14. A body system that uses blood to move oxygen and nutrients to each cell in the body
- 16. An organ near the heart that is primarily responsible for the production and maturation of immune cells
- 18. A cell that uses an action potential to send electrical signals to organs
- 19. A body system that creates cells that join to make new offspring
- 21. Organ in the inflates to bring in oxygen
- 24. A hard connective tissue made from protein and calcified cells
- 26. A body system that sends chemical signals called hormones to other organs in the body
- 31. A body system that covers the body in skin, hair, and nails
- 32. Organ that pumps blood
- 33. Food travels down this elongated tube to enter the stomach
Down
- 1. An organ made of contractile tissues
- 3. The external part of the ear
- 4. Small, mineralized tissues in the mouth that aids in mechanical digestion
- 6. A sensory organ in charge of sight
- 7. A strong digestive organ in the mouth that aids in swallowing
- 10. A body system that removes liquid wastes and regulates the amount of water in the body
- 12. A muscular organ that contracts to inflat the lungs
- 13. A body system that works to fight disease
- 15. An organ that breaks down proteins and fats using digestive enzymes
- 17. The largest organ in the human body, and its first line of defense
- 20. A series of tubing in the abdomen that absorbs nutrients during digestion
- 22. An organ that makes white blood cells that fight infection
- 23. An organ that detoxifies the blood and removes old red blood cells
- 25. A flap of tissue that closes over the trachea to prevent food from entering the airway
- 27. The external part of the nose
- 28. A body system that brings oxygen into the body and removes carbon dioxide
- 29. A body system that creates movement
- 30. An organ of the central nervous system that controls how we learn, think, and feel