Mechanics of breathing

Question 1

Describe the movement of the diaphragm during inhalation

Answer 1

-contracts
-flattens moving downwards
-increasing chest cavity and lung volume

Question 2

Describe the movement of the diaphragm during exhalation

Answer 2

-relaxes
-domes upwards
-reducing chest cavity and lung volume

Question 3

describe intercostal muscles during inhalation

Answer 3

-contracts
-ribcage moves upwards and outwards
-increasing chest cavity and lung volume

Question 4

describe intercostal muscles during exhalation

Answer 4

-relaxes
-ribcage moves downwards and inwards
-reducing chest cavity and lung volume