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Some mass wasting occurs at almost imperceptibly slow rates.
Internal Respiration
The exchange of gases (oxygen and carbon dioxide) between the blood and the body cells, facilitating cellular metabolism.
Abdominal Muscles
A group of muscles in the abdomen involved in the movement of the trunk, assistance in breathing, and support of the spine, including the rectus abdominis, obliques, and transversus abdominis.
Internal Intercostals
Muscles located between the ribs that, during exhalation, decrease the volume of the thoracic cavity to expel air from the lungs.
External Intercostals
Muscles located between the ribs, aiding in the mechanics of breathing by elevating the ribcage.
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