Category:Respiratory system

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The respiratory system is the biological system of any organism that engages in gas exchange. Even trees have respiratory systems, taking in carbon dioxide and emitting oxygen.

The main article for this category is Respiratory system.

Subcategories

This category has the following 10 subcategories, out of 10 total.

B

H

L

N

  • Nose(6 C, 48 P)

P

T

Σ