
Respiratory System Worksheet
Authored by Moses Gaitho
Mathematics
7th Grade

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11 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main function of the respiratory system?
Pump blood
Exchange gases
Digest food
Produce hormones
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which organ is primarily responsible for breathing?
Heart
Brain
Lungs
Liver
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What gas do humans breathe in that is essential for survival?
Carbon dioxide
Nitrogen
Oxygen
Hydrogen
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the name of the tiny air sacs in the lungs where gas exchange occurs?
Bronchi
Alveoli
Trachea
Diaphragm
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which structure carries air from the nose to the lungs?
Trachea
Esophagus
Bronchi
Alveoli
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What muscle helps in breathing by moving up and down?
Biceps
Diaphragm
Rib
Stomach
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What waste gas is removed from the body during exhalation?
Oxygen
Nitrogen
Carbon dioxide
Helium
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