Mechanics of Breathing

As air is tranported into it lungs it travels through/pass the ... Choose all that are correct

• The Trachea

• The Bronchus

• Brochioles

• Alveoli

• Pleural cavity

When we want to inhale the ribs have to move

• Upwards and outwards

• Inwards and downwards

When we want to exhale, the rib cage has to move

• Upwards and outwards

• Inwards and downwards

When we want to inhale the intercostal muscles

• relax

• contact

In order to exhale the intercostal musles need to:

• contract

• relax

To inhale the diaphragm

• contracts

• relaxes

To enable exhalation, the diaphragm

• contracts

• relaxes

Air rushes into the lungs when

• Atmospheric air is greater than the pressure in the lungs and there is a pressure gradient

• Atmospheric air is less than the pressure in the lungs and there is a pressure gradient

Air is forced out of the lungs on exhalation when:

• Atmospheric air is less than the pressure in the lungs and there is a pressure gradient which creates exhalation

• Atmospheric air is more than the pressure in the lungs and there is a pressure gradient which creates exhalation

Tags

NGSS.MS-PS2-2

pressure moves from low to high concentration

• False

• True