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.
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
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 >
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 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 >
According to the McGraw-Hill Applied Science Resource Center, some examples of body parts that begin with the letter "D" are the diaphragm, duodenum and dermis. The diaphragm is a thin, muscular connective tissue that divides the abdomen from the chest and contributes to breathing. The duodenum is the first part of the small intestine. The dermis is the inner layer of skin that is under the epidermis.Full Answer >