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Label the Parts of the Respiratory System
What is the difference between BREATHING and
RESPIRATION?
BREATHING= process of inhaling and exhaling
Fresh air in; stale air out
What is the difference between BREATHING and
RESPIRATION?
RESPIRATION = using oxygen to break down glucose in cells
*often called CELLULAR RESPIRATION
Breathing Clip
STRUCTURES OF THE RESPIRATORY TRACT
Nasal Cavity
o Moistens and warms air;
o Mucus & cilia help trap dust and debris
STRUCTURES OF THE RESPIRATORY TRACT
Pharynx
o Tube-like passageway
for air and food
STRUCTURES OF THE RESPIRATORY TRACT
Epiglottis
o Closes over larynx when you swallow(flap of tissue)
STRUCTURES OF THE RESPIRATORY TRACT
Trachea
o ~12 cm tube with C-shaped rings of cartilage; also has mucus & cilia
STRUCTURES OF THE RESPIRATORY TRACT
Larynx
o Airway to which your vocal cords are attached.
STRUCTURES OF THE RESPIRATORY TRACT
Bronchi
o 2 branches that carry air into lungs
STRUCTURES OF THE RESPIRATORY TRACT
Lungs
o Spongy, sac-like organs for exchanging O2 and CO2
STRUCTURES OF THE RESPIRATORY TRACT
Bronchioles
o Smaller branches of the bronchi
STRUCTURES OF THE RESPIRATORY TRACT
Alveoli
o Tiny, thin-walled sacs; in clusters; surrounded by capillaries
o Site where oxygen diffuses into the blood
STRUCTURES OF THE RESPIRATORY TRACT
Diaphragm
o Muscle separating the chest cavityfrom the intestines/gut.
o Contracts when we inhale.
Respiration by Brainpop
1. What is the main function of the respiratory system?
2. What is the dome-shaped muscle your lungs sit above called?
3. What kind of blood vessels surround the alveoli?
4. Where does your diaphragm go when you EXHALE?
Respiratory ProblemsAsthma:
• happens when bronchial tubes contract too quickly. Often aggravated by allergens.
Common allergens
Respiratory Problems
Chronic Bronchitis:
• Irritation of the bronchial tubes; produce too much mucus.
Respiratory Problems
Emphysema:
• happens when alveoli in lungs become enlarged; not enough oxygen goes into the blood
Respiratory Problems
Lung Cancer:
• Uncontrolled growth of cells in the lungs; often caused by smoking.
