Inhaling happens when a special muscle within the chest, called the diaphragm, contracts and expands the lungs, pulling in air. Conversely, exhaling occurs when the diaphragm relaxes and air is pushed out of the lungs.Know More
The entire breathing process relies on the diaphragm to control the lungs and related muscles. Inhaling begins with a contraction of the diaphragm, which causes the chest cavity to enlarge. This, in turn, leads to the lungs expanding to fill the newly enlarged chest. As the lungs expand, they reactively pull in air through the nose and mouth because they are directly linked via the windpipe. Once the lungs and chest cavity reach their maximum size, the inhaled air is absorbed into the lungs thorough the bronchial tubes. Oxygen is removed from the inhaled air, and is replaced with carbon dioxide within the alveoli.
Once this exchange is complete, the process reverses, and this time the diaphragm relaxes. As the muscle returns to its neutral state, the rib cage contracts. This causes the lungs to decrease in size. When the lungs shrink back to their smaller size, the air filling them is pushed back up the wind pipe and out through the nose and mouth.Learn more about Human Anatomy
The Merck Manual states that the diaphragm is the most important muscle involved in respiration. As a person breathes in and out, the diaphragm contracts and expands, forcing air to rush into or exit the lungs.Full Answer >
The heart itself is not anchored to the diaphragm. The heart is enclosed in a double-walled sac called the pericardium. The fibrous outer layer of the pericardium anchors the heart to the sternum, the diaphragm, and the large blood vessels. The heart needs to be anchored in place to keep it from moving around in response to movements of the person and its own muscular contractions.Full Answer >
The diaphragm is the body?s primary breathing muscle. With each inhalation, the diaphragm expands the chest, allowing the lungs to take in air. The ribs and intercostal muscles support breathing by helping the chest cavity expand and contract. The rib cage protects the lungs and heart as well.Full Answer >
The solar plexus is located approximately in front of the diaphragm in the upper abdomen. It is composed of many smaller plexi like the hepatic plexus and gastric plexus.Full Answer >