What are four principle functions of the respiratory system?

Health

2 answers:

Allisa [31]2 years ago

8 0

External is one of them

Aloiza [94]2 years ago

5 0

1. External respiration exchanges gases between bloodstream and lungs
2. Internal respiration exchanges gases between bloodstream and body tissue.
3. Air vibrating in vocal cords causes sound
4. Olfaction.

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