The mechanical process of moving air into and out of the lungs in two separate phases: inspiration and expiration.
Place in the brain that provides the primary stimulus to breath.
Each combination of inspiration and expiration is referred to as one ____ ____.
The exchange of gases between a living organism and its environment.
1 Torr is equal to...?
The four main gases in the earth's atmosphere are?
1. Nitrogen (N2)
2. Oxygen (O2)
3. Water Vapor (H2O)
4. Carbon Dioxide (CO2)
Total atmospheric pressure at sea level in Torrs.
The normal partial pressure of oxygen in arterial blood is?
The normal partial pressure of carbon dioxide in arterial blood is?
Decreased amount of oxygen saturated hemoglobin in the blood stream (measured by pulse oximeter).
Decreased amount of oxygen in the tissues.
Condition in which a patient has so many red blood cells they will not all be saturated, but there are enough saturated red blood cells to meet the body's demands.
Normal concentration of oxygen bound hemoglobin.
Cyanosis occurs when the concentration of oxygen bound hemoglobin is what?
Primary control of respiration lies in what portion of the brain?
2 Components of Brainstem involved in neural control of breathing.
1. Medulla Oblongata
The medulla oblongata controls what aspect of respiration?
What serves as a "backup" respiration control, should the medulla fail?
The Apneustic Center in the Pons
What does the Apneustic Center in the Pons do?
Stimulates the inspiratory center prolonging inhalation and inhibiting expiration.
Located in the pons. Center responsible for control of expiration (i.e., inhibits inspiration)
Located in the medulla and the carotid arteries and designed to monitor the levels of O2, CO2, and pH in the body.
Which nerve stimulates the diaphragm?