Respiratory+System-+PK

- The purpose of the respiratory system is to make sure that oxygen enters the body and carbon dioxide leaves the body,
 * (1) What is the purpose of the respiratory system?**

-During inspiration, air is brought to the lungrs through the nasal cavity, larynx, the trachea, the bronchus, then the bronchioles and then into the lungs.
 * (2) Describe the path of air from the nose to the lungs.**

- The nasal cavity filters, moistens and warms the air. The pharynx is the passage way where the for air and food to cross. The glottis is the space between the vocal chords and the opening to the larynx. The larynx is the voice box ad it produces sound.
 * (3) Which organs are part of the upper respiratory tract and what is the function of each organ?**

- The pharynx connects the nasal and oral cavities to the larynx.
 * (4) Several organs have connections with the pharynx. What are they?**

- The two pathways are the food and air passages. They cross because the larynx is in front of the esophagus.
 * (5) What two pathways cross in the pharynx? Why is it correct to say they cross?**

- The Trachea is the windpipe that is transfers the air to the bronchi. the Bronchus is the passage of air to the lungs. The bronchioles is the passage of air to alveoli. The lung contains alveoli or air sacs and they carry out the gas exchange. The diaphragm is the skeletal muscle with functions in ventilation.
 * (6) What organs are part of the lower respiratory tract? What are the the functions of each organ?**

- The alveoli carry out the gas exchange.
 * (7) Which organ of the respiratory tract functions in gas exchange?**

- Some common infections and disorders are sinusitis, otitis media, tonsillitis, and laryngitis. - Some common infections and disorders are acute bronchitis, pneumonia, and pulmonary tuberculosis.
 * (8) What are some common infections and disorders of the upper respiratory tract?**
 * (9) What are some common infections and** **disorders of the lower respiratory tract?**

- Lung cancer, emphysema, and chronic bronchitis.
 * 10) What are the three respiratory disorders commonly associated with smoking tobacco?**