Introduction to the respiratory system Flashcards
What does the upper respiratory tract contain?
Nasal cavity
Pharynx
Larynx
What does the lower respiratory tract contain?
Trachea
Primary bronchi
Lungs
What is breathing?
Process of taking air into and out of the lungs
What two structures are important for breathing?
Diaphragm
Intercostal muscles
What is the diaphragm?
Sheet of muscle that separates chest (or thoracic) cavity from the rest of the body
Where are the intercostal muscles found? What do they do?
Between the ribs
Control rib movement
Where does gas exchange occur?
The alveoli in the lungs and takes place by diffusion
What is diffusion?
Movement of gas from an area of high concentration to an area of low concentration.
Human cells can only survive if there is…
Continuous supply of oxygen
As cells uses oxygen, what is produced?
Waste gases produced
What is the principal function of the respiratory system?
Ensure enough oxygen taken from the atmosphere
Disposes of waste products
What is the collection of oxygen and removal of carbon dioxide known as?
Respiration
What is effective pulmonary respiration dependent upon?
Fully functioning cardiovascular system
