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the diaphragm, chest muscles, ribs, and the sternum.

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What makes your chest cavity increase size whenever you inhale?

contraction of diaphram and contractio of rib muscles


Why does the air pressure in your lungs to decrease and makes you inhale?

When you inhale, the diaphragm and intercostal muscles contract, expanding the chest cavity. This expansion increases the volume of the lungs, causing a decrease in air pressure within them. Air moves from an area of higher pressure (outside the body) to an area of lower pressure (inside the lungs), resulting in inhalation.


What is the large muscle that helps breathing?

The diaphragm is the primary muscle involved with breathing. When you want to take a breath in (inhale) you contract your diaphragm. This makes the thoracic cavity larger, decreasing the pressure in the thoracic cavity and generating a vacuum. Air is drawn into the lungs because of the creation of this intra-thoracic vacuum. When you relax your diaphragm the elasticity of your lungs will force air back out (exhalation).


Makes up the pleura and pericardium?

The serous membrane lines certain cavities in the body. It makes up the pleura, which lines the chest cavity, and the pericardium, which covers the heart.


How can a human being breath?

== == Humans breath with their lungs. They filter the poluated air. So it makes fresh air. the diaphgram contracts schropping down into the chest cavity ribcage expends up and down causing chest cacity to mvoe up since the chest cait is larger, the lungs are able to expend ; consequently crushes ito the lungs from oral and nasul cavinties


What causes the air pressure in your lungs to decrease and make you inhale?

When you inhale, oxygen fills your lungs. Next the oxygen diffuses out of your lungs into your bloodstream. The diffusion of oxygen from the lungs causes less pressure in your lungs signaling your brain that you need to inhale.


What will happen to your diaphragm and chest cavity as you inhale and exhale?

The lung expands when it gets full of air , so the chest needs to do the same ,because if it didn't the lungs wouldn't fit in there when they get full , and that would be a terrible mistake of our body.


When the diaphragm relaxes it moves upward. This causes the ribs to move inward and downward and makes the chest cavity smaller. Air is forced out the lungs as you?

exhale. This process reduces the volume of the chest cavity, increasing the pressure inside the lungs compared to the external atmosphere. As a result, air is pushed out of the lungs through the trachea and out of the body. This mechanism is essential for normal breathing and expelling carbon dioxide.


Which lung makes us yawn?

Neither. It's a reflex of the diaphram, which is the film of skeletal muscle separating the chest cavity from the abdomen. It controls both lungs, neither of which can inflate or deflate on their own.


How does a diaphragam help in inhalation?

The diaphragm flattens to help inhalation. This creates more space in the chest cavity, so the pressure drops which causes a vacuum. This makes air rush in and inflate the lungs.


What is the Large muscle that helps mammals breathe?

The diaphragm is the primary muscle involved with breathing. When you want to take a breath in (inhale) you contract your diaphragm. This makes the thoracic cavity larger, decreasing the pressure in the thoracic cavity and generating a vacuum. Air is drawn into the lungs because of the creation of this intra-thoracic vacuum. When you relax your diaphragm the elasticity of your lungs will force air back out (exhalation).


What makes a young girls chest bigger?

You can't just make your chest bigger. It will get bigger with age, and if it doesn't, it usually means you're very physically fit. Breasts are formed from fatty tissue. Being overweight can grant you a larger chest, but don't trade that for being very healthy with a small chest! :D