Things Needed

1
Things Needed

• Large surface area (about size of tennis court
• Moisture dissolve gasses
• Thin membrane gasses may pass through

2
Respiratory System

• 1. Alveoli
• 2. Nostrils
• 3. Larynx
• 4. Bronchi
• 5. Trachea
• 6. Lung

3
Vocabulary

• Inhalation
• Exhalation
• Breathing
• Vital capacity
• Residual volume
• Tidal volume
• Diffusion

• Taking air in
• Letting air out
• Inhaling and exhaling
• Largest amount of air that can be exhaled after a
  deep breath
• Air left in lungs after exhaling
• Amount of air exhaled after a normal breath
• Movement of oxygen in the body

4
Respiratory Movements

• Inhalation

• Exhalation

• Ribs raise and separate
• Diaphragm lowers
• Chest moves up and out
• Pressure in lungs decreases
• Air is forced in (active)

• Ribs lower
• Diaphragm raises
• Chest move in and down
• Pressure in lungs increases
• Air is pushed out (passive)

5
Respiratory Gases

• Carbon dioxide

• Oxygen

• Waste gas of cellular respiration
• Goes from cells to blood
• From blood to lungs
• Is exhaled

• Moves from the atmosphere to lungs
• Goes from alveoli to blood stream
• From blood stream to cells
• Releases energy in cellular respiration

6
Respiratory Diseases

• Lung Cancer
• Emphysema
• Asthma
• Bronchitis

• uncontrolled multiplication and disorganized
  growth of affected cells
• abnormal distension of the lungs
• Airway obstruction associated with wheezing
• Infection or irritation of the bronchial tubes