| Your ____ includes 12 pairs of curving bones. |
atria (atriums) |
| There are about 206 ____ in the human body. |
blood |
| A ____ connects a muscle to a bone. |
bones |
| Your knee is a hinge joint. Your ____ is a ball-and-socket joint. |
caffeine |
| The ____ are the two upper chambers of the heart. |
rib cage |
| Coffee, tea, and soft drinks usually contain a lot of ____. |
shoulder |
| There are about 5 quarts of ____ in an adult human. |
tendon |
| The waste liquid produced by your kidneys is called ____. |
urine |
