ABMDI Registry Practice Exam 2025 – Complete Test Prep

Question: 1 / 400

What is the primary function of the diaphragmatic muscles?

Facilitate digestion

Support limb movement

Enable breathing

The primary function of the diaphragmatic muscles is to enable breathing. The diaphragm is a dome-shaped muscle located beneath the lungs and is the most important muscle involved in respiration. When the diaphragm contracts, it moves downward, creating a vacuum that allows air to enter the lungs. During exhalation, the diaphragm relaxes, pushing air out of the lungs. This process is essential for gas exchange – taking in oxygen and expelling carbon dioxide – which is vital for maintaining life. Thus, the role of the diaphragm in the respiratory system illustrates its fundamental importance in breathing, making it the correct choice in this context.

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Regulate temperature

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