I Respiratory System – system responsible for supplying your body
with oxygen and getting rid of carbon dioxide (CO2)
II Stages of Respiration – In order to supply our body with oxygen, we
must pull in oxygen through our respiratory system. The following is the
order in which air must pass:
1) Nose/Mouth – filters air by cilia, which are - Tiny hairs that
filter dirt from the air that is breathed in
2) Larynx – also known as _Adam’s Apple______________
a. When air passes over the larynx, it _vibrates
3) Trachea – is situated at the top of the _throat_______.
a. It has rings of _cartilage__ for _support______.
4) Bronchi – located at the end of the trachea where it divides
into two tubes and goes into the __lungs
a. In the lungs, the bronchi branches into smaller branches
called __bronchioles____.
5) Alveoli - __tiny air sacs that have thin walls____
________________________________________________
a. Thin walls allows air to do what?
Allows air to be exchanged with CO2 easily
6) Diaphragm – smooth muscle that is located under the ribs that
pulls air in and pushes air out of the lungs.
a. Breathing center of the brain is called the _medulla__.
b. Responds to the levels of _O__and _CO2_ in the blood
and adjust the breathing rate to those levels.
III The Process of Respiration –
1. INHALATION - air is pulled into the LUNGS.
2. EXHALATION - ________________________________als
____________________________________________o
called EXPIRATION, air is pushed out of the lungs.
a. These two actions deliver oxygen to the __________, and
remove _________________.
b. The continuous cycles of inhalation and exhalation are
known as __________. Most of us breathe ____ to ____
times per minute.
3. DIAPHRAGM is located along the ______________________.
a. Before Inhalation the diaphragm is curved _______ into
the chest. During Inhalation, the diaphragm _______and
moves ________, causing the volume of the thoracic
cavity to ___________.
b. When the diaphragm moves down, the volume of the
thoracic cavity ___________ and the air pressure inside
decreases.
c. When the diaphragm __________, it returns to its curved
position. This action causes the air in the thoracic cavity
to decrease.
d. As the volume decreases, the pressure in the thoracic
cavity outside the lungs __________. The increase in air
pressure and causes the lungs to ___________. The air
inside the lungs is then ____________ or _______.
IV Diseases and disorders of the Respiratory System
1) Hiccups –
2) Pharyngistis –
3) Laryngitis –
4) Bronchitis –
5) Pneumonia and Tuberculosis -
6) Emphysema –
7) Asthma -
8) Lung Cancer -