Organs
What is the main organ of the respiratory system?
A. heart
B. lungs
B. lungs
lungs
lungs
It takes in or collects air that we breathe.
A. heart
B. lungs
B. lungs
What gas do we inhale?
oxygen
carbon dioxide
oxygen
Where does air enter our body?
A. eyes and ears
B. nose and mouth
B. nose and mouth
throat
throat
It allows food and air to pass through.
A. windpipe
B. throat
B. throat
What gas do we exhale?
oxygen
carbon dioxide
carbon dioxide
It is the muscle for breathing.
A. heart
B. diaphragm
B. diaphragm
bronchi
bronchi
It is the muscle for breathing.
A. diaphragm
B. heart
A. diaphragm
What blood vessels are found in the alveoli?
veins
capillaries
capillaries
A. windpipe
B. throat
B. throat
alveoli
alveoli
Gas exchange happens here.
A. alveoli
B. windpipe
A. alveoli
How many lungs do we have?
1
2
2
This is where gas exchange happens.
A. alveoli
B. bronchi
A. alveoli
gas exchange
gas exchange
What is the job of the respiratory system?
A. it takes in blood
B. it takes in oxygen and releases carbon dioxide
B. it takes in oxygen and releases carbon dioxide
Which lung is bigger?
right lung
left lung
right lung