Human Body Systems (Harcourt Science Book) A16--A27
Across
- 3. Human beings are made up of _________ of cells A7
- 4. The basic unit of structure and function of all living things A6
- 8. Nerves are bundles of _______. They carry signals from sensory organs(eyes, ears, nerves) to the brain and from the brain to the muscles.
- 12. Scientist who first viewed cells under a microscope and gave them their name A6
- 15. Cells that work together to perform a specific function form this? A12
- 16. This body system transports oxygen, nutrients, and wastes through the body in the blood
- 17. This is the waste product that comes out of your nose and mouth from the Respiratory System? (2 words-no space)
- 18. Muscles are attached to bones by this?
- 19. This system breaks down food into nutrients and gets those nutrients into the blood.
- 20. Tissues that work together form this? A12
- 21. There are 206 of these in the human body?
Down
- 1. This body system has the nose, mouth, windpipe or trachea, and lungs.
- 2. In the Digestive System, this organ produces this, which breaks down fats into smaller particles that can be more easily digested.
- 5. Bones are attached to other bones by this?
- 6. These blood vessels carry blood away from the heart?
- 7. This body system provides support for our bodies. It protects many of our internal organs.
- 9. This system connects everything to the brain-brain, spinal cord, nerves, etc...
- 10. Organs that work together to perform a function form this? A12
- 11. Which part of the circulatory system is being left out? Blood, veins, arteries, and _________?
- 13. When you swallow food, it travels down your what?
- 14. ________ muscles move bones and hold your skeleton upright which you can control. Involuntary muscles, you cannot control like blinking or your heart muscle pumping, move on their on.
- 17. Type of muscle that makes up the walls of your heart.