Respiratory System
Video
Respiration System
You will use 3 pages of your journal for this lesson.
1. One page for hand written notes onto a journal page
2. 2nd page for diagram
3. 3rd page for chart on function
https://www.youtube.com/watch?v=hc1YtXc_84A
Functions of the Respiratory System
Supply oxygen to the blood
Remove carbon dioxide from the blood
Functions of the Respiratory System
Breathing the physical process of moving air into and out of the lungs
Exchange of gases, specifically oxygen and carbon dioxide
Functions of the Respiratory System
Respiration chemical process of releasing energy from glucose in the cells.
There are 2 types:
Aerobic needs oxygen and releases energy
Anaerobic does NOT need oxygen, and releases far less energy
FIND THIS PAGE:
FILL IT OUT, BOTH THE DIAGRAM
LABELS AND THE
CHART WITH
STRUCTURE NAME
AND FUNCTION AS
WE GO THROUGH
THE NOTES
AT THE END, YOU WILL GLUE THESE
PAGES IN SIDE BY
SIDE
Structures (Organs) of the
Respiratory System
Nose - Nasal cavity (1) = air is
cleaned, warmed,
and moistened
Mouth (2) -
air enters through the
mouth, as well as the
nostrils
Structures/organs of the
Respiratory System
Throat
Pharynx (3) =
passageway for both
food and air
Structures/organs of the
Respiratory System
Throat - Epiglottis (4) = flap that
closes over the larynx. The epiglottis is a flap of tissue. Its main function is to close over the windpipe (trachea) while you're eating to prevent food from entering your airways.
larynx (5) - is the top part of the trachea
Structures/organs of the
Respiratory System
Throat
Larynx = air only;
vocal chords are
attached here. Purpose is to make sound, your voice!
Vocal chord video:
How the larynx works
https://www.youtube.com/watch?v=R17yH0GSDvA
Structures/organs of the
Respiratory System
Trachea (6) Trachea (windpipe)
c-shaped rings of
cartilage keep it
open all the time
Function - connects the larynx to the bronchi and allows air to pass through the neck and into the thorax.
Structures/organs of the Respiratory
System
Lungs (7)
In the lungs, the oxygen is moved into the bloodstream and carried through the body.
Structures/Organs of the
Respiratory System
In the lungs:
(8) Bronchi = 2 small
branches at end of
trachea
Their function is to carry air
into lungs
Structures/Organs of the
Respiratory System
Lungs
(9) Bronchioles =
smaller branches
off of bronchi
Function - Bronchioles are tiny airways that carry oxygen to alveoli, or air sacs, in the lungs
Organs of the Respiratory
System
Lungs - (10)Alveoli
Alveoli = tiny, grape-
like sacs at the end
of bronchioles;
surrounded by
capillaries
Their function is to allow oxygen and carbon dioxide to move between the lungs and bloodstream
Organs of the Respiratory
System
Diaphragm (11)
(muscle below the
lungs that helps
air move in and out of the body)
When you breathe in, the diaphragm contracts downward, creating a
vacuum that causes a rush of fresh air into the lungs.
The opposite occurs with exhalation, where the diaphragm relaxes
upwards, pushing on the lungs, allowing them to deflate.
Capillaries (not on your page, write the next few slides on that first note page in your journal)
Capillaries are the smallest of the body's blood vessels.
They are only one cell thick, and they transfer oxygen and other nutrients from the bloodstream to other tissues in the body; they also collect carbon dioxide waste materials and fluids for return to the veins.
Gas Exchange in the Lungs
Takes place between alveoli and capillaries
INHALE
oxygen enters body
into alveoli
into capillaries
into blood
to body cells
Gas Exchange in the Lungs
Takes place between alveoli and capillaries
EXHALE
leaves body
into alveoli
into capillaries
into blood
CO2 from body cells
Quick
check!
What is the function of the
respiratory system?1. To provide oxygen & carbon dioxide to the body cells.
2. To provide carbon dioxide to body cells & remove oxygen.
3. To provide oxygen to body cells & remove carbon dioxide.
4. To remove oxygen & carbon dioxide from the body cells.
Where does the exchange of
oxygen and carbon dioxide occur?
1. The heart
2. The alveoli
3. The pharynx
4. The body cells
What carries the blood back to the
heart after it picks up oxygen from
the alveoli?1. Lungs
2. Aorta
3. Pulmonary
artery
4. Pulmonary vein
What is this structure?
1. Diagram
2. Diagonal
3. Diaphoresis
4. Diaphragm
What causes you to exhale?
1. Your lungs contract to squeeze the air out.
2. Your diaphragm moves up, pushing air out of the lungs.
3. Your ribs squeeze the air out of your lungs.
4. Your diaphragm moves down, letting air escape from your lungs.
Notes
Your notes should be complete
Glue them in to your journal now
Then make sure you have a computer and the HW assignment, Body Smart Scavenger Hunt we can start on it now.
