Warmup: November 13, 2014
Is breathing the same as
respiration? Why or why not?
The words breathing and respiration are
often used to mean the same thing.
However, breathing is only one part of
respiration. Respiration is the way the
body gains and uses oxygen and gets rid
of carbon dioxide.
Answers from homework…
1. Lymph collects pathogens and dead cells
from body tissues. Lymphocytes in the lymph nodes, tonsils,
and spleen attack and mark pathogens for destruction.
2. Plasma is pushed out of capillaries.
Lymph capillaries absorb lymph.
Lymph capillaries carry lymph to lymphatic
vessels.
Lymphatic vessels deliver lymph to veins in the neck
Answers continued…
3. blood plasma, dead cells,
pathogens
4. Lymph tissue must be spread out
to collect fluid from all areas of the
body.
The Respiratory System
 Group
of organs and structures that take
in oxygen and release carbon dioxide
Nose
Throat
Lungs
Passageways to lungs
Steps Air Flows to Lungs:
1. Air enters nose or mouth
2. Flows through pharynx
(throat) 2 tubes, the esophagus
leads to stomach and the other
leads to lungs
3. Flows past larynx (vocal
cords)
4. Trachea (windpipe)
5. Then, trachea splits into two
branches called bronchi
6. Bronchus branches into
smaller tubes called bronchioles
7. Bronchioles branches to form
tiny sacs called alveoli in the
lungs
Producing Sound
Muscles
connected to the
larynx control how much the
vocal cords are stretched.
When air flows between the
vocal cords, the cords
vibrate….these vibrations
make sound.
How Do You Breathe?
Lungs have no muscles
Diaphragm is dome-shaped muscle
under lungs that contracts (moves
down) when you inhale
Rib cage lifts up
Exhaling is opposite (diaphragm and
rib muscles relax)
Respiratory Disorders
 Have
trouble getting oxygen making them feel tired
 Problems
getting rid of carbon dioxide; therefore,
building up in body and making them sick
 Examples:
Asthma-causes
bronchioles to narrow
Emphysema-alveoli
Severe
are damaged
Acute Respiratory Syndrome (SARS)-caused
by a virus
Warmup 10/30

Write the following words next to the number it describes:
nose, pharynx, larynx, trachea, bronchi
1.
Two Y-shaped tubes that go into the lungs.
2.
A tube that holds the vocal cords.
3.
A tube that connects the vocal cord area to the Y-shaped
tubes that go into the lungs
4.
One of the main ways air enters and leaves the body.
5.
A tube that carries both air and food into the body.
Warmup 10/30

Write the following words next to the number it describes:
nose, pharynx, larynx, trachea, bronchi
1.
Two Y-shaped tubes that go into the lungs. bronchi
2.
A tube that holds the vocal cords. larynx
3.
A tube that connects the vocal cord area to the Y-shaped
tubes that go into the lungs. trachea
4.
One of the main ways air enters and leaves the body. nose
5.
A tube that carries both air and food into the body. pharynx