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A couple of reasons:
surfactant - a detergent - reduces surface tension to a negative value.
the plura contains a "vacume" (lower pressure than atmospheric) and pulls the lungs to the chest wall.
venous blood partial gas pressure is sub atmospheric.
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∙ 15y ago
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What is the force responsible for normal expiration?
Elastic recoil of lungs and thoracic wall
Which cavities are lungs are found in?
The pleural cavities, ventral and thoracic
What cavity houses the lungs?
The thoracic cavity is the anatomical region with the lungs being situated inside the right and left pleural cavities that flank the pericardial cavity .
Where the lungs are contained?
Thoracic cavity
What are the bones surrounding your lungs?
The lungs are surrounded by the bones of the thoracic cage. The thoracic cage consists of the following bones:12 pairs of rib12 thoracic vertebrasternum
What is a condition in which there is air inside the thoracic cavity and outside of the lungs?
The condition in which there is air inside the thoracic cavity and outside of the lungs is called a pneumothorax.
The lungs are in what aspect of the body?
Thoracic cavity
What cavity are the lungs rested in?
Thoracic cavity
Does the thoracic cage house the heart and lungs?
no
Where are the humans?
The lungs are located in the thoracic cavity.
Thoracic cavity organs?
Heart and lungs.
What effect does enlargement of the thoracic cavity has on the air pressure inside the lungs?
reduces intra-thoracic pressure which creates suction that draws air into lungs
