Medic 14: Airway
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Created by:
corbatacampo on August 15, 2011
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22 terms
Terms | Definitions |
|---|---|
 The mechanical process of moving air into and out of the lungs in two separate phases: inspiration and expiration. | Ventilation |
| Place in the brain that provides the primary stimulus to breath. | Medulla Oblongata |
| Each combination of inspiration and expiration is referred to as one ____ ____. | Respiratory Cycle |
| The exchange of gases between a living organism and its environment. | Respiration |
| 1 Torr is equal to...? | 1 mmHg |
| 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. | 760 Torr |
| The normal partial pressure of oxygen in arterial blood is? | PaO2=80-100 Torr |
| The normal partial pressure of carbon dioxide in arterial blood is? | PaCO2=35-45 Torr |
| Decreased amount of oxygen saturated hemoglobin in the blood stream (measured by pulse oximeter). | Hypoxemia |
| Decreased amount of oxygen in the tissues. | Hypoxia |
| 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. | Polycythemia Vera |
| Normal concentration of oxygen bound hemoglobin. | 15 mg/dL |
| Cyanosis occurs when the concentration of oxygen bound hemoglobin is what? | 5 mg/dL |
| Primary control of respiration lies in what portion of the brain? | Brainstem |
| 2 Components of Brainstem involved in neural control of breathing. | 1. Medulla Oblongata 2. Pons |
| The medulla oblongata controls what aspect of respiration? | Involuntary |
| 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) | Pneumotaxic Center |
| Located in the medulla and the carotid arteries and designed to monitor the levels of O2, CO2, and pH in the body. | Chemoreceptors |
| Which nerve stimulates the diaphragm? | Phrenic |
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