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Diffusion : What is it called when oxygen passes from Alveoli into the blood stream?
Hormones : ___________ are chemical substances created in glands and circulated in the blood.
Spinal Cord : The Central Nervous System consists of the Brain and _______ ________
Oxygen : All cells need
Carbon Dioxide : ________ _________ is breathed out by humans
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Across:1. | The Central Nervous System consists of the Brain and _______ ________ | 4. | What is it called when oxygen passes from Alveoli into the blood stream? |
| | | Down:2. | ________ _________ is breathed out by humans |
| 3. | ___________ are chemical substances created in glands and circulated in the blood. |
| |
© 2016
PuzzleFast.com, Noncommercial Use Only
hey hey
Across:1. | The Central Nervous System consists of the Brain and _______ ________ | 4. | What is it called when oxygen passes from Alveoli into the blood stream? |
| | | Down:2. | ________ _________ is breathed out by humans |
| 3. | ___________ are chemical substances created in glands and circulated in the blood. |
| |
© 2016
PuzzleFast.com, Noncommercial Use Only