1. Respiratory System Chapter 13

2. Function Brings oxygen into the body through the breathing process –Inspiration-oxygen brought in –Expiration-carbon dioxide released Functions –Exchanges gases between the blood and lungs –Helps regulate body temperature by cooling or warming the blood –Helps maintain blood electrolyte balance

3. Respiration External respiration-brings oxygen into the lungs Internal respiration-exchanges oxygen & carbon dioxide Cellular respiration-changes acid produced during metabolism into harmless chemicals in the cells

4. Respiratory System Controlled by the involuntary & voluntary nervous system Body chemically regulates the rate

5. Anatomy Nose or Mouth Tonsils/adnoids Sinuses Throat-pharynx Windpipe-trachea Larynx-voicebox Epiglottis Bronchi Bronchioles Alveoli Pleura Diaphram

6. Mechanics of Breathing

7. Assessment Rate –Normal 14-20 Eupnea Dyspnea Tachypnea Bradypnea

8. Assessment Character –Regular rhythm Apnea Cheyne stokes Kussmal respirations Using Accessory muscles

9. Assessment Lung Sounds –Normal –Rhonchi –Rales/Crackles –Wheezes –Stridor

10. Lung Volume Respiratory Capacity-amount of air brought into the lungs Lung Volume-measurement of respiratory capacity Residual volume-little amount of air that stays in the lungs to maintain shape Vital capacity-includes tidal volume, inspiratory reserve, & expiratory reserve-total amount of air that can be exchanged –Tidal volume-amount of air normally exchanged –Inspiratory reserve-additional amount of air that can be inhaled –Expiratory reserve-additional amount of air that can be exhaled