Part: 1 Mark each
1. Bronchus - The bronchus(plural: bronchi) are extensions of the windpipe that move air to and from the lungs.
2. Trachea - The trachea is a wide, hollow tube that connects the larynx to the bronchi of the lungs.
3. Lung - It is the main part of the respiratory system where the exchange of gases takes place.
4. Bronchioles - The bronchioles are the passageways through which air passes from the bronchi to the alveoli (air sacs) of the lungs.
5. Diaphragm - The diaphragm in the respiratory system is the dome-shaped sheet of muscle that separates the chest from the abdomen. It helps in breathing by expanding the chest cavity during inhalation and contracting it during exhalation.