science

SIMILARITY AND DIFFERENCE BETWEEN RESPIRATORY SYSTEM OF   BIRDS AND HUMANS                         

 

                         BIRDS                                  

• the respiration of bird is much different than human because birds have larynx but it does not use to make sound instead that they have syrinx for voice... 

• Air flow is unidirectional, moving to the lungs with a high oxygen content due to the air bags avoiding the used air coming in contact with the fresh air.

• bird do not have diaphragm instead air moves in and out of the respiratory system through pressure changes in air sac 

• A bird's trachea size in comparison to their body size is large compared to human's trachea size.

• The respiratory system of bird is much more efficient than that of humans, taking in more oxygen with a single breath; however, this also means that birds are able to take in more toxins.

• Birds breathe at a slower rate comparative to their size than humans                                                                                                                                                                                                                                       Human

• One breath completes a full cycle of air flow in humans

• The larynx serves as a voice box

• Air flow is bidirectional, moving in and out of the lungs, contaminating fresh air with used air

• The main muscle for breathing in humans is the diaphragm. When we breathe in, the diaphragm becomes smaller, the intercostals muscles become shorter and cause the ribs and sternum to rise up and the lungs stretch out, bringing air in. 

• A human's trachea size in comparison to our body size is small compared to bird's trachea size.

• Human's respiratory system may not be as efficient as birds, but it is much less vulnerable to poisons.

• Humans breathe faster in comparative to their size than birds