The Human Respiratory System Flashcards
1
Q
Where is the respiratory system located?
A
in the chest (or thorax or thoracic cavity)
2
Q
What is the base of the thorax formed by?
A
It is formed by a sheet of involuntary muscle called the diaphragm.
3
Q
What does the diaphragm separate?
A
It separates the thorax from the lower abdominal cavity (or abdomen).
4
Q
What forms the walls of the thorax?
A
The ribs and the intercostal muscles
5
Q
What can change the size of the thorax and are responsible for ventilation?
A
Contraction and relaxation of the diaphragm and intercostal muscles change the size of the thorax and are responsible for ventilation.
6
Q
What is ventilation?
A
the movement of the air in and out of the lungs
