Feb 10, 2026 · While the diaphragm and intercostal muscles are the primary drivers of respiration, the accessory muscles, including the sternocleidomastoid, scalene muscles, and various abdominal …

Feb 3, 2026 · When the diaphragm can’t generate enough force, the body recruits accessory muscles to compensate. The result: shallow, effortful breathing that relies heavily on neck, chest, and back …

Sep 5, 2022 · In this case, they must rely on additional, or accessory, muscles to help them breathe. This article discusses what accessory muscles are and when and why the body may use them.

May 23, 2025 · Accessory muscles are those that are not primarily responsible for movement but do provide assistance. They are typically used when taking a deliberately deep breath, during strenuous …

Accessory muscle use is one of the earliest signs of airway obstruction. Use of accessory muscles indicates severe disease and signifies that the forced expiratory volume in 1 s (FEV 1) is decreased …

Accessory muscle use refers to the engagement of extra muscles like the sternocleidomastoid and intercostals during labored breathing. It signals respiratory distress and is a key clinical sign in …

The accessory muscles are recruited during times of exercising because of the increased metabolic need and also during dysfunction in the respiratory system [6]

When one takes a deep breath, accessory muscles of respiration are brought into action (Scalene, sternomastoid and trapezium ). Scalene is the first muscle to start contracting and gradually other …

Jan 12, 2026 · Accessory muscles, such as the sternocleidomastoid and scalene muscles, assist in lifting the rib cage and increasing lung expansion. This coordinated effort enables athletes and …

May 5, 2025 · Accessory muscles are additional muscles that the body activates to assist the primary breathing muscles in inhaling and exhaling air into the lungs. They are typically used when more …