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This web is a large 'ball' of capillaries. The millions of tiny alveoli in the human lungs are a very effective adaptation which provides a huge surface area for gaseous exchange into and out of the blood. The alveoli have a very large surface area – in fact if all of the alveoli in your lungs were spread out flat they would cover the area of a tennis court.
This large surface area is the result of all the alveoli being small spheres – it is another example of the importance of the surface area: volume ratio.
What else can I help you with?
Around the wall of each air sac in the lungs is a web of what?
capillaries
What is the web around the wall of each air sac in the lungs?
Do not really know
What structures form a web around the wall of each air sac in the lungs?
capillaries
How do the lungs move?
The diaphragm is a strong wall of muscle on the bottom of the chest cavity. As this wall of muscle expands downward, a vacuum is created which pulls air into the lungs. As the diaphragm returns to it's original position, air is pushed out of the lungs.
What is the wall of muscle underneath your lungs called?
The wall of muscle underneath your lungs is called the diaphragm. It plays a crucial role in the process of breathing by contracting and relaxing to help draw air into the lungs and then push air out.
How does air get into the lungs?
you breath it in and the air goes into your lungs and helps pump the blood around
What tissue forms a wall of capillaries and air sacs of lungs?
Transitional arms
Does all the air in the lungs get change with each breath?
All of the air in the lungs gets exchanged with oxygen upon each breath. We exhale carbon dioxide and inhale oxygen.
Does the air in the lungs get changed with each breath?
True
How much air is left in the lungs after you breathe out?
Its around 30% left in the lungs
What enters your blood with each breath of air?
The diaphragm squeezes the air out of your lungs
Air is forced into the lungs by the contraction of the?
Actually, air isn't forced into the lungs my the contraction of any muscle, but by the relaxation of the Diaphragm, along with the Intercostalis muscles on the ribs and the smooth muscle on the lungs. When your diaphragm contracts, it pushes air out of your lungs. When it relaxes, air is drawn in to the lungs. The intercostalis muscles also help move the ribs when the lungs move as your breath. There is one set on the ribs and one set in between each rib.Hope this helps!
