? External nares (nostrils) Bring in oxygen/exhale CO2, warm and moisten air, filtration ? Oral cavity Food and air enters ? Bronchioles End divisions of tertiary bronchi, terminate in alveoli (increased SA) ? Parietal pleura Lines thoracic cavity ? Epiglottis Flap that keeps food out of airway
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Bronchioles Pleura Bronchi Nasal Cavity Larynx Epiglottis Pharynx Trachea Alveoli Diaphragm 1. The throat 2. The voice box 3. A flap of cartilage that closes off the airways during 4. The airway that extends from the larynx to the bronchi 5. The large airways that branch off of the trachea 6. Very small airways 7. The air sacs at the terminal ends of the airways 8. The membrane that surrounds the lungs, decreasing the friction of breathing 9. Warms and moistens inhaled air; region that detects smells. 10. The primary muscle of breathing
Adi S.
Air enters the upper respiratory system through the____________________, which are the openings that lead into the nasal cavity. The air moves through passageways that are formed by the____________________, which protrude into the cavity. 2. From the nasal cavity, air flows into the first part of the pharynx, which is the____________________. Then, it flows through the other 2 parts of the pharynx, which are called the____________________and____________________. 3. Air then makes its way into the____________________. This structure includes 9 laryngeal cartilages that____________________. The largest of these cartilages is the____________________. Another significant part of the larynx, the____________________, covers the opening to the trachea during swallowing to prevent food from accidentally entering the respiratory tract. This structure is composed of____________________. 4. Then air moves into the first part of the lower respiratory system, the____________________, which has rings composed of____________________. This structure branches into 2____________________, 1 for each lung. 5. Air flows through the bronchi, which get____________________as you move from primary to secondary to tertiary, eventually terminating in____________________, which are tiny air sacs where gas exchange occurs. 6. Air flows from the bronchi into the lungs medially through the____________________. The____________________lung has 3 lobes, whereas the____________________lung has 2. There are grooves on the surface of the lungs, called____________________ which separate the lungs into lobes. The____________________lung is slightly larger than the____________________ lung due to its position in relation to the heart.
1. They are the openings into the nasal passages that are lined with hairs. 2. It filters the dust and other particles present in the air. 3. It is called the throat. 4. It contains two vocal cords that vibrate when air passes by them. 5. It is known as the windpipe. 6. These are two tubes that carry air into the lungs. 7. These are smaller tubes of bronchi. 8. They are grape-like structures at the end of bronchioles. 9. They are located in the chest cavity surrounded by the rib cage. 10. A domed-shaped muscle that controls breathing which is located at the bottom of the lungs.
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