The Respiratory System
RAKHSHANDA HASHMIBS Ed.DEPARTMENT OF
EDUCATION,NUML,Isb
Primary Function of Respiratory System
• The respiratory system supplies the blood with oxygen so that the blood can deliver oxygen to all parts of the body.
• And also removes carbon dioxide waste that cells produce.
• . If you didn’t breathe you would pass out or die.
Respiratory System Structure• Nasal Cavity: Passes air through nose• Mouth: Passes air through• Pharynx: The throat. Cone shaped passageway
leading to trachea. • Trachea: Windpipe. Main tube connecting
nose/mouth to lungs.• Epiglottis: Flap that covers the entrance to the
trachea.• Lungs: Main organ of the respiratory
system.
Respiratory System Structure• Bronchi: Two tubes inside of lungs that air
passes through to the bronchioles.• Bronchioles: Small branching out tubes divided
into alveoli. • Alveoli: Tiny air sacs that do the oxidation and
the exhale of carbon dioxide.• Capillaries: Blood vessels that are imbedded in
the walls of the alveoli. While in the capillaries the blood discharges carbon dioxide into the alveoli and takes up oxygen from the air in the alveoli.
• Cilia: Hair like structures that remove dust and dirt from the air.
How the Respiratory System Works
Air that flows from the mouth or nasal cavity travels through the pharynx and
moves down to the trachea. Then the air moves to the bronchi tubes as they enter the lungs. Once the air gets in the lungs, the air enters separate branches called the bronchiole. Carbon dioxide passes from the blood into the alveoli and is
then exhaled.
How the Respiratory System Works
Once in your lungs Oxygen travels from your lungs through the
bloodstream to the cells in all parts of your body. Cells use the oxygen as fuel
and give off carbon dioxide as waste gas.The waste gas is carried by the bloodstream back to the lungs to be
exhaled.
INTERESTING
FACTS!!!!
Why Do I Yawn?
When you are sleepy or drowsy the lungs do not take enough oxygen from the air. This causes a shortage of oxygen in our bodies. The brain senses this shortage of oxygen and sends a message that causes you to take a deep long breath---a YAWN.
Why Do I Sneeze?Sneezing is like a cough in the upper breathing passages. It is the body's way of removing an irritant from the sensitive mucous membranes of the nose. Many things can irritate the mucous membranes. Dust, pollen, pepper or even a cold blast of air are just some of the many things that may cause you to sneeze.
What Causes Hiccups?Hiccups are the sudden movements of the diaphragm. It is involuntary --- you have no control over hiccups, as you well know. There are many causes of hiccups. The diaphragm may get irritated, you may have eaten to fast, or maybe some substance in the blood could even have brought on the hiccups.
• About half a liter of water per day is lost through breathing.
• Yawning brings more oxygen to the lungs.
• Your right lung is larger than your left.• Your right lung has three lobes and your
left lung only has two• We breathe 13 pints of air every
minute.
Cont…People under 30 take in double the amount f oxygen in comparison to someone who's 80 years oldA person sleeping almost always breathes twelve or fifteen times a minute.
•The fastest recorded “ sneeze speed” is 165 km per
hour?
• It is healthier to breathe through your nose than your
mouth, because your nose hairs and mucus clean the
air.
How to keep your respiratory system healthy• Try to Avoid:
-Smoking-Being around a smoker(SecondHand)-Inhaling other chemicals and drugs.-Being around dusty or thick polluted air.
• What to do:- Exercise- Eat healthy- Go to annual doctor checkups