You are thinking of the thoracic diaphragm.
lungs
Tracgea
The cardiac muscle is the heart. The heart is in the cardiovascular system, despite that the tissue makes a muscle.
diaphragm
Diaphragm seperates the respiratory system and the digestive system.
The anatomical features of the respiratory system include airways (nose,pharynx,larynx, trachea, bronchus), lungs, and the respiratory muscles (sternocleidomastoid, platysma, scalene muscle of the neck, external intercostal muscle and diaphragm)
The diaphragm is functionally part of the muscular system, as it is a muscle. Functionally, it is critical to the respiratory system.
so it interacts witih the muscle system Nervous System it also interacts with the nervous system
The diaphragm is the main muscle involved with the respiratory system. It either contracts or expands to allow air in or out of the lungs, which makes you breathe.The diaphragm is the main muscle involved with the respiratory system. It either contracts or expands to allow air in or out of the lungs, which makes you breathe.
The respiratory system. It's a sheet of muscle below the lungs, that contracts to force air into the body.
I think you mean the diaphragm, and that's part of the respiratory system. It's a muscle below the lungs, and when it tightens, it increases the volume of the cavity the lungs are in, so the lungs increase in volume as well, and air rushes into the lungs.
The muscle system helps the body move, maintain posture, and generate heat. It also plays a role in supporting the circulatory and respiratory systems.