Respiratory System

What is the purpose of the respiratory system?

• To regulate body temperature

• To exchange gases between an organism and its environment

• To digest food

• To pump blood throughout the body

Which structure in the respiratory system contains the vocal cords?

• Trachea

• Pharynx

• Nasal Cavity

• Larynx

During inspiration, what happens to the diaphragm?

• It contracts and flattens downwards

• It relaxes and moves upwards

• It expands sideways

• It remains stationary

Where does gas exchange occur in the respiratory system?

• Larynx

• Trachea

• Alveoli

• Bronchi

Which respiratory pathology causes the airways to become inflamed and narrow?

• Emphysema

• Bronchitis

• Pneumonia

• Asthma

What is the function of the intercostal muscles in breathing?

• To eliminate excess carbon dioxide

• To filter out dust particles

• To produce sound during speech

• To assist in breathing by expanding the rib cage

What is the main function of the respiratory system?

• To regulate pH levels in the blood

• To exchange gases between the body and the environment

• To produce hormones

• To digest food

Which structure in the respiratory system is known as the windpipe?

• Bronchi

• Trachea

• Alveoli

• Larynx

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

• To filter out dust particles

• To produce sound during speech

• To exchange gases in the alveoli

• To branch into smaller tubes for air passage

Which gas is transferred to the bloodstream during gas exchange in the alveoli?

• Carbon Dioxide

• Oxygen

• Nitrogen

• Hydrogen