Human Body

2. This is the cycle of breathing
4. These create blood clots to prevent bleeding
8. This is the waste product of the respiratory system
9. Blood vessel that carries blood to the heart
11. This is where your oxygen goes and the carbon dioxide gets forced out
14. tree-like, branching extensions of a neuron's cell body that act as the primary information receivers, collecting electrochemical signals from other neurons
15. the pale-yellow, liquid component of blood, comprising about 55% of total blood volume
17. This attaches your muscle to your bone
18. an involuntary, non-striated muscle tissue found in the walls of hollow organs, blood vessels, and airways
19. These produce saliva to help keep your mouth moist and other things
21. produces red and white blood cells

1. This is located behind your tongue
3. specialized nerve cells in the peripheral nervous system that convert external and internal stimuli
5. The process of eliminating waste
6. a long, slender projection of a nerve cell that transmits electrical impulses away from the neuron's cell body to other neurons, muscles, or glands
7. This is an odorless and colorless compound that contains waste product of protein metabolism in mammals
10. paired blood vessels, arising from the abdominal aorta
12. Basically the heart
13. When you eat, food goes down what
16. a blood vessel that carries blood away from the heart
20. Blood vessel that carries blood away from the heart to the rest of the body