During which phase of respiration does the diaphragm relax? (2023)

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Question: During which phase of respiration does the diaphragm relax? (2023)

Options:

Correct Answer: Exhalation

Exam Year: 2023

Solution:

During exhalation, the diaphragm relaxes, causing the thoracic cavity to decrease in volume and air to be expelled from the lungs.

During which phase of respiration does the diaphragm relax? (2023)

During which phase of respiration does the diaphragm relax? (2023)

Step 1: Understand that respiration has two main phases: inhalation and exhalation.
Step 2: Know that during inhalation, the diaphragm contracts and moves downwards, allowing air to enter the lungs.
Step 3: Recognize that during exhalation, the diaphragm relaxes and moves back up.
Step 4: Realize that when the diaphragm relaxes, the volume of the thoracic cavity decreases.
Step 5: Understand that this decrease in volume pushes air out of the lungs, completing the exhalation process.

Respiration Phases – Understanding the phases of respiration, specifically inhalation and exhalation, and the role of the diaphragm in these processes.
Diaphragm Function – Knowledge of how the diaphragm's contraction and relaxation affect lung volume and airflow.