Here are 50 quiz questions on the Human Respiratory System with multiple-choice answers:
1. What is the primary function of the respiratory system?
A) Digest food
B) Exchange gases
C) Pump blood
D) Produce hormones
Answer: B
2. Which organ is the main site for gas exchange in the respiratory system?
A) Trachea
B) Bronchi
C) Alveoli
D) Larynx
Answer: C
3. What muscle plays a key role in breathing by contracting and relaxing?
A) Biceps
B) Diaphragm
C) Heart
D) Abdominal muscles
Answer: B
4. Air enters the respiratory system through the:
A) Mouth and nose
B) Esophagus
C) Stomach
D) Lungs
Answer: A
, 5. What is the tube that connects the throat to the lungs called?
A) Esophagus
B) Trachea
C) Bronchus
D) Pharynx
Answer: B
6. The voice box is also known as the:
A) Pharynx
B) Larynx
C) Bronchi
D) Alveoli
Answer: B
7. Which structure prevents food from entering the trachea during
swallowing?
A) Epiglottis
B) Bronchi
C) Nasal cavity
D) Diaphragm
Answer: A
8. The bronchi branch into smaller tubes called:
A) Bronchioles
B) Alveoli
C) Trachea
D) Pharynx
Answer: A
1. What is the primary function of the respiratory system?
A) Digest food
B) Exchange gases
C) Pump blood
D) Produce hormones
Answer: B
2. Which organ is the main site for gas exchange in the respiratory system?
A) Trachea
B) Bronchi
C) Alveoli
D) Larynx
Answer: C
3. What muscle plays a key role in breathing by contracting and relaxing?
A) Biceps
B) Diaphragm
C) Heart
D) Abdominal muscles
Answer: B
4. Air enters the respiratory system through the:
A) Mouth and nose
B) Esophagus
C) Stomach
D) Lungs
Answer: A
, 5. What is the tube that connects the throat to the lungs called?
A) Esophagus
B) Trachea
C) Bronchus
D) Pharynx
Answer: B
6. The voice box is also known as the:
A) Pharynx
B) Larynx
C) Bronchi
D) Alveoli
Answer: B
7. Which structure prevents food from entering the trachea during
swallowing?
A) Epiglottis
B) Bronchi
C) Nasal cavity
D) Diaphragm
Answer: A
8. The bronchi branch into smaller tubes called:
A) Bronchioles
B) Alveoli
C) Trachea
D) Pharynx
Answer: A