Respiratory System

What is the primary function of the respiratory system?

• • Circulation of blood

• Gas exchange

• Digestion

• Temperature regulation

True or False: Carbon dioxide is transported out of the body during exhalation.

• True

• False

What structure is responsible for gas exchange in the lungs?

• Trachea

• Bronchi

• Alveoli

• Diaphragm

How does the diaphragm contribute to breathing?

• By expanding the ribcage

• By contracting and relaxing to change lung volume

• By controlling the larynx

• By producing mucus

True or False: Oxygen is the only gas that we inhale.

• True

• False

Which gas is removed from the blood during exhalation?

• Oxygen

• Nitrogen

• Carbon Dioxide

• Hydrogen

What is the main muscle involved in the process of exhalation?

• Intercostal Muscles

• Alveoli

• Diaphragm

• Larynx

True or False: The diaphragm moves downward when we inhale.

• True

• False

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

• • Filtering air before it enters the lungs

• • Producing sound

• Exchanging oxygen and carbon dioxide with blood

• • Trapping dust particles

Which structure prevents food from entering the trachea during swallowing?

• Bronchi

• Larynx

• Epiglottis

• Pharynx