A)
Diaphragm Rib cage Becomes flatten Moves downwards and inwards
B)
Diaphragm Rib cage Becomes flatten Moves outwards and upwards
C)
Diaphragm Rib cage Becomes more curved Moves downwards and inwards
D)
Diaphragm Rib cage Becomes more curved Moves outwards and upwards
Correct Answer: B
Solution :
During inspiration, the diaphragm becomes flat and gets lowered by the contraction of its muscles thereby increasing the volume of the thoracic cavity in length. Intercostal muscles of ribs also contract and pull the ribs and sternum upward and outward, further increasing the volume of the thoracic cavity.
You need to login to perform this action.
You will be redirected in
3 sec
