Muscle Function Basics
Respiratory muscles generate the force needed for ventilation and include the diaphragm intercostals and accessory muscles which work together to maintain effective breathing patterns.
Diaphragm Mechanics
The diaphragm contracts and flattens during inhalation creating negative pressure that draws air into the lungs and its strength is essential for adequate ventilation.
Accessory Muscle Use
Accessory muscles assist when respiratory demand increases or when primary muscles weaken and their use indicates increased work of breathing.
Muscle Fatigue
Respiratory muscle fatigue occurs when workload exceeds capacity leading to shallow breathing and potential respiratory failure.
Clinical Relevance
Assessing muscle function helps clinicians identify respiratory compromise and determine appropriate interventions.
Related Articles
Respiratory Therapy Anatomy Essentials