Transcript The Respiratory System Larynx (Voice Box) - Course

The Respiratory System
By:
Chloë Durfee Sydney Modder
Ramya Ramesh Megumi Sharma
Chase Damis
Larynx/Pharynx
Larynx (Voice Box)
Pharynx (throat)
• Connects pharynx to
trachea
• Provides airway
• Prevents food from
entering respiratory tract
• Produces sound
• Provides passageway for
respiratory and digestive
tracts
• Tube like structure that
connects nasal and oral
cavities to larynx
• Coordinates breathing and
swallowing while eating
Larynx/Pharynx
Epiglottis
• Blocks food and liquids from entering the
trachea
• Spoon-like structure
Epiglottis
Lungs
•Pair of spongy, air-filled organs.
•Located on either side of thorax.
•Covered by thin tissue called pleura.
•Pull in oxygen and absorbs it into linings of
lungs.
•Pushes oxygen into chambers of the heart so
oxygen travels throughout the body.
Lungs
Trachea (Windpipe)
• This is the tube that air passes through in
order to get to the bronchi and then the
lungs.
Trachea (Windpipe)
Alveoli/Bronchi
Bronchi
• Large tubes leading
from trachea to the
lungs
• Move air in and out of
lungs
• Made of cartilage
• Cleans, warms, and
moistens incoming air
Alveoli
• Tiny sacs in lungs
• 300-400 million in lungs
• Oxygenated and
deoxygenated blood
surrounds the alveoli
surface
• Gives oxygen to
surrounding capillaries
• Oxygen naturally moves
from alveoli to
bloodstream
Alveoli/Bronchi
Thoracic Diaphragm
• Expels urine/feces
• Prevents acid reflux
• Contracts and compresses when humans
inhale
Thoracic Diaphragm
Processes
1. Pulmonary VentilationAir in and out of lungs (Gases are refreshed)
2. External RespirationO2 from lungs to CO2
3. Transport of Respiratory GasesMoves O2 from lungs to blood and CO2 from tissues to blood
4. Internal RespirationOxygen from blood to tissue cells.
Carbon dioxide from tissue cells to blood
Zones
Respiratory Zone-Site of gas exchange
Conducting Zone-Where respiratory organs cleanse air
Major Functions/
How Respiratory Functions with other
Systems
How
It functions
Functionsof
With
Systems:
Major
the Other
respiratory
system are to:
•It works with the circulatory system to oxygenate blood,
• Introduce oxygen into the blood stream
which delivers oxygen to organs and tissues that need it.
• Not
let food system
go anywhere
butthe
thebrain
digestive
•It works with
the nervous
because
sendstract
signals to the lungs to breathe.
Breathing Processes
•
1.
2.
3.
4.
5.
6.
7.
•
1.
2.
3.
Respiration:
Oxygen moves through nose/mouth into trachea.
Goes into bronchi (connected to lungs).
Moves into smaller bronchioles.
Lungs and diaphragm contract. Chest cavity relaxation.
Oxygen travels to alveoli.
Exchanged for carbon dioxide.
New oxygen transported by red blood cells throughout
body.
Expiration:
During use, carbon dioxide is created.
Moves inside veins to lungs. Exchanged in alveoli.
Carbon dioxide goes up trachea and out of nose and mouth.