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 cavity
from 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 Problems
Asthma:
• 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.
Smoking
by
Brainpop