Respiratory System Flashcards
What system works independently with the respiratory system
Circulatory system
What does the respiratory system consist of?
Lungs and respiratory muscles
What main job does the respiratory system have to do?
Intake of oxygen from air into the body
And removal of carbon dioxide from the body into the air
What is the purpose of lungs
They take in oxygen to produce energy for daily functions
Where are the right and left lungs located?
In the thorax
Positioned either side of the rib cage
Where is the heart situated ?
Between the lungs
What are the heart and lungs connected by?
Pulmonary blood vessels
What waste product is transported back to the lungs for removal ?
Carbon dioxide
What order does air enter the body
Nose and mouth Pharynx (throat) Larynx (voice box) Trachea (wind pipe) Primary branchi Branchiolies Alveoli
Why does the body breathe state two answers
Rising levels of co2 in blood
Stretch receptors in respiratory muscles become stretched
What is expiration/ exhalation ?
Expelling air out of lungs
What is inspiration/ inhalation ?
Drawing air into lungs
What sport is good for breathing?
Yoga
Explain what happens in the process of inspiration ?
The diaphragm muscle contracts causing the normal dome shape to flatten
- the external instercostal muscle contracts raising the rib cage
- creates a negative pressure known as vaccume effect sucking air into lungs
Explain what happens in expiration?
Diaphragm muscles relax and rise returning upwards to dome shape
- intercostal muscles relax, decreasing the chest cavity volume.
- creates a positive pressure, which pushes some air out of lungs