The lungs are in charge of the breathing process, being the main organ of the respiratory system. Each lung is considered an excretory organ —belonging to the excretory system— since it is capable of eliminating the carbon dioxide (CO₂) produced by the metabolism during expiration.

As a result of the gaseous exchange, the oxygen entering the lungs through the inhaled air passes into the blood, while the CO₂ is removed from the blood. This CO₂ is removed during expiration, which makes the lungs part of the excretory system.

The other options are not correct because:

The excretory system does not introduce more oxygen into the lungs.
The circulation of blood in and out of the lungs is a function of the circulatory system.
Urine is not produced by breathing.

6 0

2 years ago

Read 2 more answers

Giraffes are also vertebrates, like humans. In fact, despite their different neck sizes, humans and giraffes have exactly seven

Nana76 [90]

Answer:

giraffes necks consists a tall bone like structure called notochord which gives support to the skeletal system like how do we have backbone

3 0

2 years ago

Absorption is the process in which cells A) create food. B) make proteins. C) release wastes. D) take in nutrients.

Cloud [144]

D) take in nutrients because endocytosis is the process when a cell takes in food