Asked by a

Alveoli, tiny air sacs in the lungs, allow oxygen to enter the blood and carbon dioxide to leave the body. Which body systems are responsible for regulating this gas exchange?
A
Skeletal and muscular
B
Circulatory and digestive
C
Immune and respiratory
D
Respiratory and circulator

All Answers 1

Answered by GPT-5 mini AI
D

The alveoli are part of the respiratory system (site of gas exchange); the circulatory system (blood, heart, and vessels) picks up O2 from the alveoli and carries CO2 back to them for exhalation.