When you breathe your chest rises and falls with each breath because under you rib cage is the diaphram that expands causing your chest to rise with each breath you take in and when you exhale your chest falls because your diaphram is pushing the air out.
Because air gets into your chest
allows your ribs to move up and down when you breath the intercostal muscles contract.these pull the ribcage upwards.so the chest increases in volume when we breath out the intercostal muscles relax which lowers the ribcage.the chest decreases in volume see the diagram below for help The intercostal muscles are located between the ribs and they lift the diaphragm allowing oxygen to flow in and out of the lungs. Basically, they aid in breathing.
The diaphragm is a muscle that moves or pushes up your lung when you exhale and down when you inhale in order to allow more space for oxygen to fill your lung. Also, your chest expands as you breath in and relax as you exhale.
almost every muscle in your body moves when you breath weird huh
walking
When they contract
The intercostal muscles are the muscles that lie between the ribs and form the chest wall. Their function is to aid inhalation and exhalation.
Air moves into and out of a person's lungs through the process of inhalation and exhalation. During inhalation, the diaphragm and chest muscles contract, creating a vacuum that draws air into the lungs. During exhalation, the diaphragm and chest muscles relax, allowing air to be pushed out of the lungs.
Birds fly in the air by pushing their chest muscles and moving their wings up and down.
No. There is no voluntary muscle in the breast. They can flex the chest muscles under the breast and so cause them to move.
Muscles cause bones to move when they contract. This contraction exerts force on the tendons, which in turn pull on the bones, resulting in movement at the joints. The interaction between muscles, tendons, and bones allows for various movements and activities.
Under normal inspiration the chest wall stays relatively still, only the abdomen moves because of diaphragmatic motion. However, when you take a deep breath the intercostal muscles and the scalene muscles contract. This causes the chest wall to expand outward(due to the intercostals) and move upwards(due to the scalenes).