1. Respiratory System

2. NASAL CAVITY EPIGLOTTIS LARYNX (VOCAL CORDS) TRACHEA LUNG LUNG1
NASAL CAVITY
ORAL CAVITY 2 3
EPIGLOTTIS
LARYNX (VOCAL CORDS) 4 5
TRACHEA 6
LUNG 6
LUNG 7
BRONCHUS 7
BRONCHUS 8
BRONCHIOLE 9
ALVEOLI
DIAPHRAGM 10

3. What are they?
1) NASAL CAVITY (NOSE): The preferred entrance for air into the respiratory system.
2) ORAL CAVITY (MOUTH): Another way for air to enter into the respiratory system.
3) EPIGLOTTIS: A flap of cartilage that blocks the larynx (airway) when swallowing food.
4) LARYNX: Vocal cords that vibrate as air moves through them
Nose: The hairs that line the inside wall are part of the air-cleansing system.
Mouth: especially in people who have a mouth-breathing habit or whose nasal passages may be temporarily obstructed, as by a cold.
5) TRACHEA (WINDPIPE): Passageway that leads to the lungs.
6) LUNG: The respiration organ of the respiratory system
7) BRONCHI (TUBES): The trachea divides into two main bronchi, one for each lung.
8) BRONCHIOLES: The smallest subdivisions of the bronchi
9) DIAPHRAGM: The muscle that separates the chest cavity from the abdominal cavity. It works to expand the lungs.
10) ALVEOLI: The very small air sacs deep in our lungs where gas exchange occurs.

4. BREATHING

5. EXHALATION
breathe out
INHALATION
breath in
AIR:
DIAPHRAGM:
STOMACH:
CHEST:
GOES IN
GOES OUT
CONTRACTS (flattens & moves downward)
RELAXES (arches and moves upward)
CONTRACTS
EXPANDS
CONTRACTS
EXPANDS

6. Between the alveoli and red blood cells in the capillaries
WHAT?
Oxygen (from air) and carbon dioxide (from our body) are exchanged.
GAS EXCHANGE
WHERE?
HOW?
Between the alveoli and red blood cells in the capillaries
Oxygen from air moves across the membrane into the blood
Carbon dioxide diffuses from the blood into the air we breathe out

7. CAPILLARY (small blood vessel)
ALVEOLI
ALVEOLI
BRONCHIOLE
OXYGEN
CARBON DIOXIDE
RED BLOOD CELL (RBC)
CAPILLARY (small blood vessel)

8. We have about 25,000,000 (25 million) alveoli in EACH lung
We have about 25,000,000 (25 million) alveoli in EACH lung! Why do you think it is advantageous to have so many?
VS.
IT INCREASES SURFACE AREA! The more surface area we have, the faster and more efficient gas exchange will be.

9. ASTHMA
WHAT? It is a long term disease where the bronchioles get swollen and constrict with mucus inside making it difficult to breath
CAUSES?
Family
Air pollution
Airways/bronchioles get swollen; mucus inside; makes it difficult to breathe; muscles around airways twitch or spasm, so they constrict/tighten so there is less room for air to flow through
SYMPTOMS?
Coughing
Shortness of breath
Wheezing
Tightness in chest

10. INFLAMMATION MUSCLE TIGHTENING
Triggers?
Allergies (e.g., dust, pollen)
Viral infection (e.g., cold, flu)
Inducers?
Cold air
Smoke
Exercise
INFLAMMATION
MUSCLE TIGHTENING
MUSCLE TIGHTENING
INFLAMMATION
MUCUS

11. TREATMENT?
Preventer Inhaler used before an attack during shortness of breath.
Rescue Inhaler used after an asthma attack
CURE? NONE - There is no cure but it can be managed