Download Chapter 14: Respiratory System

Professor Tracy Abram, MAIS, BS
Objectives
•
Discuss functions of the
respiratory system
•
List major organs of the
respiratory system
•
Investigate and analyze
internal and external
respiration
•
Mechanisms that regulate
respiration
Inquiring Minds want to know…
 What is the function of the respiratory system?
Respiratory System Functions:
 Distributes air
 Exchanges gasses
 Effective Filterer
 Dynamic Warmer
 Super Humidifier
Structural Plan Figure 14-1 p. 363
 Respiratory Organs:
 Nose-olfactory cells for sense of smell
 Larynx- voice box
 Pharynx- throat
 Trachea-windpipe
 Bronchi
 Lungs
 ***Tube with many branches of alveoli****
Alveoli Circulation
capillaries
Alveolar
sac
Passive Transport
 Diffusion: responsible for the gas exchange in the
respiratory system.
Respiratory Tracts
Upper Respiratory Tract
Lower Respiratory Tract
 Nose
 Trachea
 Pharynx
 Bronchi
 Larynx
 Lungs
Nose
Pharnyx: Throat
Larynx: Voicebox
Trachea: Windpipe
Bronchi, Bronchioles, & Alveoli
 Figure 14-7, page 370
Cellular Respiration
 When humans breathe,
laugh or talk, we release
carbon dioxide. This
process is called cellular
respiration. In cellular
respiration, humans take
in food and oxygen and
release carbon dioxide
and water to
produce energy.
 Respiration=
 C6H12O6 (glucose) +
6O2 (oxygen)----------->
6CO2 +6H2O + energy
Breathing mechanics
Inspiration
 Inhalation- moves air into the
lungs
Expiration
 Exhalation- moves air out of
the lungs
 Diaphragm: muscles
separating the abdomen from
thoracic cavity
 Figure 14-11 page 376
Respiratory Quiz for you!
Answers to Quiz
 1. Alveoli
 2. Nose
 3. Larynx
 4. Bronchi
 5. Trachea
 6. Lung