what muscle most directly contributes to breathing?

The diaphragm is the muscle that most directly contributes to breathing. It is a dome-shaped muscle located beneath the lungs and separates the thoracic and abdominal cavities. When the diaphragm contracts and moves downward, it increases the volume of the thoracic cavity, causing inhalation. Conversely, when it relaxes and moves upward, it decreases the volume of the thoracic cavity, leading to exhalation.

The primary muscle that directly contributes to breathing is the diaphragm, which is a dome-shaped muscle located between the chest and abdominal cavity. When you inhale, the diaphragm contracts and moves downward, increasing the space in the chest cavity. This action causes the lungs to expand and air to be drawn into the lungs. When you exhale, the diaphragm relaxes and moves upward, pushing air out of the lungs. So, the diaphragm plays a crucial role in the process of breathing.

The muscle that most directly contributes to breathing is the diaphragm. The diaphragm is a large, dome-shaped muscle located at the bottom of the rib cage, separating the chest cavity from the abdominal cavity. When you inhale, the diaphragm contracts and moves downward, enlarging the chest cavity and creating a vacuum that draws air into the lungs. When you exhale, the diaphragm relaxes and moves back up, helping to push the air out of the lungs. This process is known as diaphragmatic or deep breathing.