Ace the BMAT 2026 – Unleash Your Biomedical Superpowers!

Question: 1 / 400

During inhalation, what happens to the diaphragm?

It contracts and flattens

During inhalation, the diaphragm plays a crucial role in the process of breathing. When the diaphragm contracts, it moves downwards and flattens out. This contraction increases the volume of the thoracic cavity, which creates a negative pressure relative to the outside atmosphere. As a result, air is drawn into the lungs to equalize the pressure difference. This physiological process is essential for ensuring adequate ventilation and gas exchange in the body.

Given this understanding, the choice indicating that the diaphragm contracts and flattens accurately describes its function during inhalation. The other options do not align with the mechanics of breathing: if the diaphragm were to relax and move upwards, for instance, it would decrease the thoracic volume and hinder air intake. Therefore, the correct choice rightly captures the active role of the diaphragm during the inhalation phase of respiration.

Get further explanation with Examzify DeepDiveBeta

It relaxes and moves upwards

It expands and stretches

It stays in the same position

Next Question

Report this question

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy