Respiratory+System+Period+1+script

Sam: Hello Addie, today I feel like exploring the respiratory system.

Sam: The primary function of the respiratory system is to supply the blood with oxygen in order for the blood to deliver oxygen to all parts of the body. The respiratory system does this through breathing.

Addie: (slide #2) This is a diagram of the respiratory system.

Sam: (slide #2) In order for it to work properly, ever part of the respiration system must be operating in sync.

Addie: Upon inhalation, gas exchange occurs at the alveoli, small sacs at the end of the bronchioles. They are the destination of the air we breath in. The bronchioles are the tiny branches of air tubes in the lungs.

Sam: The esophagus is the passage leading from the mouth and throat to the stomach.

Addie: The hollow tube about 5 inches long that starts behind the nose and ends at the top of the trachea, which is the windpipe, and esophagus, is the pharynx.

Sam: The larynx is an organ in the throat used in breathing, swallowing, and talking. It is made of cartilage and is line by a mucous membrane similar to the lining of the mouth. Also called the "voice box."

Addie: Molecules of oxygen and carbon dioxide are passively exchanged, by diffusion, between the gaseous external environment and the blood. This exchange process occurs in the alveolar region of the lungs.

Sam: The major function of the respiratory system is gas exchange between the external environment and an organism's respiratory system.

Addie: There are different kinds of sections of zones these include the conducting zone (the region for gas transport from the outside atmosphere to just above the alveoli), the transitional zone and the respiratory zone (the alveolar region where gas exchange occurs).

Sam: In conducting zone, it consists of the trachea, bronchi, and the bronchioles. the functions of this section are a low resistance pathway for airflow, defence, warms and moistens air, and phonates.

Addie: The transitional zone is just the passage ways that the air flows through to get to the respiratory zone.

Sam: The respiratory zone is the site of the carbon dioxide and oxygen exchange with the blood. The respiratory bronchioles and the alveolar ducts are responsible for 10% of the gas exchange. The alveoli are responsible for the other 90%.