The lungs (two) expand as air enters through the nose to the trachea to the main bronchi (two, split from one main bronchus) and down into the lungs. The diaphragm, a muscle band below the lungs, relaxes and contracts to assist in inhalation and exhalation.
the trachea
the trachea, also known as the windpipe
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n. bronchus, any of the main air passages of the lungs (Anatomy)
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The alveoli of the lungs which is the respiratory system
Lungs.
The lung is the gateway between the air and the circulatory system. It takes oxygen out of the air, and releases carbon dioxide into it.
The diaphragm is the organ of the respiratory system that doesn't touch air.
The respiratory system is the organ system that moves air into and out of your body.
Respiratory System
lung
Plants do not have a specific respiratory organ air is let into the plant via stomata in the plant's leaves.
The respiratory system. The alveoli are air sacs in the lungs.
The lungs are small in size and are supplemented by Air Sacs. And even the Respiratory Tract
The organ that holds and releases air which allows the perch to move up and down in the water is the swim bladder. Most fish have this organ, which they use to control how deep or how shallow they swim.
The respiratory system. The alveoli are air sacs in the lungs.