Understanding the Respiratory System

Which part of the brain is primarily responsible for the control of breathing?

• Cerebellum

• Medulla oblongata

• Hypothalamus

• Thalamus

During inhalation, what happens to the diaphragm?

• It relaxes and moves upwards

• It contracts and moves downwards

• It remains stationary

• It contracts and moves upwards

What is the primary gas exchanged in the alveoli of the lungs?

• Nitrogen

• Oxygen

• Carbon dioxide

• Helium

What is the role of the intercostal muscles during breathing?

• They help in the exchange of gases

• They assist in the contraction of the diaphragm

• They help expand and contract the rib cage

• They regulate the rate of breathing

Which of these structures is called your throat?

• Pharynx

• Larynx

• Trachea

Where does the gaseous exchange take place?

(a)  

What is the role of the diaphragm?

• The diaphragm contracts and relaxes to facilitate airflow in and out of the lungs.

• The diaphragm regulates blood flow to the heart.
• The diaphragm helps in digestion by separating the stomach from the lungs.

What does the lung volume 'TV' stand for?

(a)