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Respiratory System

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Respiratory System Notes Chapter 37 Section 3 Keys Lecture Outline The Respiratory System PowerPoint Notes textbook questions Respiration Two processes: 1. – PowerPoint PPT presentation

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Title: Respiratory System


1
Respiratory System
Notes
  • Chapter 37
  • Section 3

2
Lecture Outline The Respiratory System
PowerPoint Notes
textbook questions
Keys
3
Respiration
  • Two processes
  • 1. Release of energy from breakdown of food
    molecules.
  • All living cells use oxygen to release energy.
  • This process produces waste carbon dioxide.
  • 2.The exchange of gases between the atmosphere
    and bodys cells.
  • We will focus on the exchange of gases.

4
So what are the functions of the respiratory
system?
  • Bring oxygen into the body
  • Remove carbon dioxide (CO2) from the body
  • Clean, moisten and warm air
  • Enable speech

5
Organs of the respiratory system
  • Many organs assist in the respiratory process.
  • Main organs of respiration are the lungs

6
Organs of the respiratory system
  • Nose and sinuses
  • cleans, warms and moistens

7
Organs of the respiratory system
  • Pharynx short tube leading to larynx
  • Epiglottis cartilaginous flap covering opening
    to larynx (glottis)
  • Larynx voicebox containing vocal cords

8
Organs of the respiratory system
  • Trachea tubes leading into lungs.
  • These branch into primary bronchi then into
    bronchioles

9
Organs of the respiratory system
  • Bronchioles end in sac like structures called
    Alveoli
  • Gas exchange occurs between the alveoli and
    capillaries

10
Bronchial Tubes
11
Organs of the respiratory system
12
Gas Exchange
  • Capillaries surround the alveoli
  • Gases are exchanged between the thin walls of the
    alveoli and capillaries

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