2006-11-12 11:52:44 · 5 answers · asked by ->>sweet<<- 1 in Science & Mathematics ➔ Medicine
Respiration is a process involving inhalation and exhalation of airs.As for inhalation, the muscles that are involved in it is the diaphragm and external intercostal muscles.During inhalation, the contration of diaphragm (lowered to the abdominal) increased the lungs' volume so that the pressure inside the lungs are lower compared to the atmosphere pressure.As for external intercostal muscles, it help by elavating the ribs cage upward(superior) and forward(anterior).The movement that is made is know as Bucket Handle movement.
As for exhalation, the muscles that are involved in it is the abdominal muscles and the internal intercostal muscles.During exhalation process, the abdominal muscles contrated and pushed the diaphragm upward, squized the lungs(decreasing the lungs' volume).Decrease in volume caused the pressure inside the lungs are higher than the atmosphere pressure and then we exhaled the air out.As for internal intercostal muscles, it draged the ribs cage downward(interior) and backward or inward(posterior).
The two muscles involved in exhalation process only participated only if the process is active.Mostly, the exhalation is a passive movement of the ribs cage due to the elasticity of the lungs and the alveolies.
If the person exhaling with force,then the muscles will participate in.
Hope this helps ya.
(^^o)/
2006-11-12 14:41:33 · answer #1 · answered by Dark SOuL 2 · 0⤊ 0⤋
The main organs are the lungs. However the heart and the brain also play a large part in respiratory function and respiratory drive. The brain is what makes you breathe, the heart, blood vessels and blood itself delivers oxygen to the body.
2006-11-12 19:55:58 · answer #2 · answered by vkb354 2 · 1⤊ 0⤋
Air enters nasal cavities, goes through the pharynx and larynx, goes down the trachea and bronccus, and finally goes into each alveoli. There it goes through the membrane of the alveoli to get to the blood. Because the heart pumps the blood, the oxygen, fixed to the red blood cells, can go to the cells. Then the cell give the carbon dioxide to the blood to bring it back to the lungs, where it will get rid of it by exhaling.
2006-11-12 20:45:59 · answer #3 · answered by kihela 3 · 0⤊ 0⤋
brain,heart,lungs,skin,blood vessels
2006-11-12 20:03:57 · answer #4 · answered by lazy 1 · 0⤊ 0⤋
Lungs should be the obvious answer....
2006-11-12 20:00:09 · answer #5 · answered by miss m 4 · 0⤊ 0⤋