What are the muscles of respiration? We created this video to cover the medical definition and provide a brief overview of this topic.
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The process of breathing involves several muscles that work together to facilitate the movement of air in and out of the lungs. The primary muscles of respiration include the following:

➡ Diaphragm
The diaphragm is the primary muscle responsible for breathing. It's a large, domeshaped muscle that separates the chest cavity from the abdominal cavity. When the diaphragm contracts, it flattens and moves downward, increasing the volume of the chest cavity and drawing air into the lungs. When it relaxes, the diaphragm moves upward, decreasing the volume of the chest cavity and forcing air out of the lungs.

➡ Intercostal Muscles
There are two types of intercostal muscles:
External
Internal

The external intercostal muscles are involved in inspiration, while the internal intercostal muscles are involved in expiration. During inspiration, the external intercostal muscles contract, lifting the ribs and expanding the chest cavity. During expiration, the internal intercostal muscles contract, pulling the ribs downward and reducing the chest cavity volume, forcing air out of the lungs.

➡ Accessory Muscles of Breathing
These are used mainly during heavy breathing or when the body needs additional help to move air in and out of the lungs. This includes the following:

Sternocleidomastoid: These muscles are located on either side of the neck and help to lift the sternum and the upper ribs, further expanding the chest cavity during inspiration.
Scalene Muscles: Located in the neck, these muscles help to elevate the upper ribs during a deep inhalation.
Pectoralis Minor: This muscle, located in the chest, also assists in elevating the ribs during a forceful inhalation.
Abdominal Muscles: These include the rectus abdominis, transversus abdominis, and the internal and external oblique muscles.

They help in forceful expiration by compressing the abdominal cavity, which pushes the diaphragm upward, reducing the volume of the chest cavity and forcing air out of the lungs.

➡ Other Accessory Muscles
Additional muscles, such as the serratus anterior and latissimus dorsi, may also assist in deep breathing, particularly during exercise or other activities that require increased respiration.

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Respiratory Therapy Definitions [Glossary] ➜ ➜ ➜ https://bit.ly/3g6s4Pj'>https://bit.ly/3g6s4Pj'>https://bit.ly/3g6s4Pj'>https://bit.ly/3g6s4Pj

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MEDICAL DISCLAIMER
This content is for educational and informational purposes only. It is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Please consult with a physician with any questions that you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you watch in this video. We strive for 100% accuracy, but errors may occur, and medications, protocols, and treatment methods may change over time.

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⏰TIMESTAMPS
0:00 Intro
0:48 Diaphragm
1:16 Intercostal Muscles
1:55 Accessory Muscles of Breathing
2:08 Sternocleidomastoid
2:20 Scalene Muscles
2:30 Pectoralis Minor
2:38 Abdominal Muscles
3:00 Other Accessory Muscles

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