HB+Respiratory+System

=__Respiratory System (p.169-183)__=

__What is the purpose of the respiratory system?__

 * The respiratory system's job is to ensure that oxygen enters the body and carbon dioxide leaves the body.

__Describe the path of air from the nose to the lungs.__

 * The respiratory system works with the cardiovascular system to transport oxygen (02) from the lungs to the tissues and carbon dioxide (co2) from the tissues to the lungs. Gas exchange is necessary because the cells of the body carry out cellular respiration, cells use up 02 and produce co2.

__Which organs are part of the upper respiratory tract and what is the function of each organ?__

 * The nasal cavity takes in the oxygen and filters, warms and moistens air. From their the pharynx is the passageway where pathway for air and food cross. The Glottis is the space between the vocal chords and it opens to the larynx. The Larynx is the last step of the process that is also responsible for producing sound. The path from the nose to the lungs is the upper respiratory tract.

__Several organs have connections with the pharynx. What are they?__

 * The pharynx has three parts: The nasopharynx, oropharynx, and the laryngopharynx.

__What two pathways cross in the pharynx? Why is it correct to say they cross?__

 * In the pharynx, the air passage and the food passage cross because the larynx, which receives air, is in front of the esophagus, which receives food.

__What organs are part of the lower respiratory tract? What are the the functions of each organ?__

 * The lower respiratory tract is made up of the Trachea whcih is the air pssage way to the bronchi. The Bronchus is passage of the air to the lungs. The Bronchioles is the passage of air to the alveoli. The Lung contains alveoli and carries out the gas exchange. The Diaphragm is the skeletal muscle, and functions in ventilation.

__Which organ of the respiratory tract functions in gas exchange?__

 * The Lung contains alveoli and carries out the gas exchange

__What are some common infections and disorders of the upper respiratory tract?__

 * Infections of the upper respiratory tractare nasal cavaties sinuses, throat, tonsils, and larynx.These include sinusitis, otitis media, tonsillitis, and laryngitis.

__What are some common infections and disorders of the lower respiratory tract?__

 * Lower respiratory tract infection include acute bronchitis, pneumonia, and pulmonary tuberculosis. Repiratory pulmonary disorders are exemplified by pulmonary fibrosis. Obstructive pulmonary disorders are exemplified by chronic bronchitis, emphysema, and asthma. Smoking can eventually lead to lung cancer.

__What are the three respiratory disorders commonly associated with smoking tobacco?__

 * Aneurysms, bronchitis, and emphysema are all respiratory disorders that are commonly brought on by smoking.