Mechanics of breathing Flashcards
1
Q
What is expiration?
A
The process of breathing air out of the lungs
2
Q
What is inspiration?
A
The process of breathing air into the lungs
3
Q
What is pulmonary ventilation?
A
the process by which air is transported into and out of the lungs
4
Q
What are the internal intercostal muscles?
A
They lie inside the rib cage. they draw the ribs downwards and inwards, decreasing the volume of the chest cavity and forcing the air out of the lungs when breathing out
5
Q
what are the external intercostal muscles?
A
They lie outside the rib cage. they pull the ribs upwards and outwards, increasing the volume of the chest cavity and forcing the air into the lungs when breathing in
