How does the respiratory system contribute to homeostasis?
A) It helps the endocrine system regulate pH of body fluids.
B) It assists the urinary system in the process of formation of angiotensin I.
C) It aids return of venous blood to the heart during expiration.
D) It helps adjust pH of body fluids through exhalation of carbon dioxide.
E) It helps facilitate bowel movements in the digestive system.

Question

Quizplus · Accepted Answer

The respiratory system contributes to homeostasis by helping adjust the pH of body fluids through exhalation of carbon dioxide. Carbon dioxide is a waste product of cellular respiration and when it accumulates in the blood, it can lower the pH, making the blood more acidic. The respiratory system removes the excess carbon dioxide through exhalation, which helps maintain the pH balance of the body fluids.

How Does the Respiratory System Contribute to Homeostasis