Respiratory System Quiz - 6

What is the function of the nasal cavity in the upper respiratory system?

• It is where food and air enter the body.

• It is the air-only passage connecting the throat to the lungs.

• It is where air goes in and out of the body, and is warmed and moistened, and dust is trapped, as air is breathed in.

• It is a flap of tissue that covers the air-only passage.

What is the primary function of the trachea in the respiratory system?

• It connects the throat to the lungs.

• It is where food and air enter the body.

• It is where air is warmed and moistened.

• It is a tiny air sac where gas exchange occurs.

In the lower respiratory system, what does the bronchi connect?

• Trachea to alveoli

• Bronchioles to alveoli

• Trachea to bronchioles

• Bronchioles to trachea

What is the function of the alveoli in the respiratory system?

• They connect the trachea to the bronchioles.

• They are tiny air sacs where the exchange of O2 and CO2 happens.

• They are where food and air enter the body.

• They are where air is warmed and moistened.

What is the main muscle that helps the respiratory system work by relaxing and contracting?

• Heart

• Diaphragm

• Stomach

• Liver

Which organ is considered the main organ of the respiratory system?

• Heart

• Lungs

• Liver

• Kidneys

What is the function of the diaphragm in the respiratory system?

• It filters blood

• It digests food

• It pulls and pushes air in and out of the body

• It circulates blood

Which part of the respiratory system is labeled as the "windpipe" ?

• Pharynx

• Trachea

• Bronchi

• Alveoli

What is the role of the alveoli in the respiratory system?

• They transport oxygen in the blood

• They exchange oxygen and carbon dioxide

• They produce sound

• They filter air

What role does the diaphragm play during exhalation?

• It contracts vigorously

• It relaxes and moves upwards

• It remains stationary

• It expands the ribcage