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Related Concept Videos

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The thorax muscles are central to the body's respiration and provide essential support and movement for the upper body. They are intricately designed to facilitate the complex breathing process while also contributing to the structural integrity and mobility of the chest and upper limbs.
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Pulmonary ventilation is a vital process that ensures the exchange of oxygen and carbon dioxide in the lungs. It refers to the movement of air into and out of the lungs, enabling the body to obtain oxygen and remove waste carbon dioxide. In this article, we will explore the intricacies of pulmonary ventilation, including its underlying principles, mechanisms, and the interplay of pressures within the respiratory system.
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In terms of human respiration, the act of expelling air, known as exhalation (or expiration), operates on the principle of pressure gradients. During expiration, the pressure within the lungs exceeds that of the surrounding atmosphere. Under normal conditions, quiet breathing involves passive exhalation and is free of muscular contractions. This is because the exhalation process is driven by the natural elastic recoil of the lungs and chest wall, both of which have an inherent tendency to...
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The process of breathing, inhaling and exhaling, involves the coordinated movement of the chest wall, the lungs, and the muscles that move them. Two muscle groups with important roles in breathing are the diaphragm, located directly below the lungs, and the intercostal muscles, which lie between the ribs. When the diaphragm contracts, it moves downward, increasing the volume of the thoracic cavity and creating more room for the lungs to expand. When the intercostal muscles contract, the ribs...
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Related Experiment Video

Updated: Sep 16, 2025

Author Spotlight: Unraveling the Impact of Mechanical Ventilation on Diaphragm Function and Patient Outcomes
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Diaphragm muscle: a pump that can not fail.

Gary C Sieck1, Matthew J Fogarty1

  • 1Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, United States.

Physiological Reviews
|July 11, 2025
PubMed
Summary

The diaphragm muscle (DIAm) is crucial for mammalian breathing and non-respiratory actions. This review explores its neural control and coordination with other muscles for efficient function and to prevent fatigue.

Keywords:
breathingcoughmotor neuronsneurodegenerationskeletal muscle

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Area of Science:

  • Physiology
  • Neuroscience

Background:

  • The diaphragm muscle (DIAm) is the primary inspiratory pump in mammals, essential for breathing.
  • Its function is vital, akin to the heart, requiring precise neural control to prevent fatigue.

Purpose of the Study:

  • To explore the mechanistic underpinnings of neural control of the diaphragm.
  • To highlight the coordination of DIAm activation during breathing and non-ventilatory behaviors.

Main Methods:

  • This is a review article, synthesizing existing research on DIAm neural control.
  • Focuses on the coordination between DIAm and other respiratory and non-respiratory muscles.

Main Results:

  • The DIAm's role extends beyond inspiration, involving complex coordination in non-ventilatory actions.
  • Impaired non-ventilatory DIAm functions are linked to various medical conditions.

Conclusions:

  • Emphasizes the need to view DIAm beyond its pump function, focusing on neural control and muscle coordination.
  • Understanding DIAm coordination is key to addressing pathologies related to its impaired function.