! Human Body Systems !

3. Long bunched up tubes in the digestive system.
7. Spongy substance found in the center of your bones.
10. The thicker of the two bones in the forearm.
13. Protects your brain.
17. Voluntary striated muscle.
18. Distributes oxygen rich blood to the body.
19. Allows fluids to flow in and out of the uterus
20. The pair of spongy pinkish gray organs also known as the left ____ and the right ____.

1. Collect oxygen poor blood and brings it back to the heart.
2. What is the abbreviation for Central Nervous System.
4. Involuntary non-striated muscle.
5. Largest organ in the body and covers the body's entire surface.
6. Involuntary striated muscle.
8. Removes waste product from the blood.
9. Produces enzymes that help to digest food.
11. Bands of tissue that hold bones, joints, and organs in place.
12. Transports urine from the renal pelvis to the bladder.
14. Pumps blood around your body as it beats.
15. They are like cables and carry electrical impulses between your brain and body and your spinal cord and body.
16. Controls thought, Memory, Emotion, Touch, Motor skills, Vision, Breathing, Temperature, Hunger and every other process that regulates our body.