The Democratic Party presidential primaries and caucuses are indirect elections in which voters cast ballots for a slate of delegates to the 2016 Democratic National Convention; these delegates in turn directly elect the Democratic Party's presidential nominee.or the U.S. territories of Puerto Rico, American Samoa, Guam, and the U.S. Virgin Islands; and Democrats Abroad, fixed numbers of pledged delegates are allocated. Each state and U.S territory will also be awarded bonus pledged delegates based on whether they schedule their primary or caucus later in the primary season.
Diaphragmâs Role in Breathing. When the diaphragm contracts and moves lower, the chest cavity enlarges, reducing the pressure inside the lungs. To equalize the pressure, air enters the lungs. When the diaphragm relaxes and moves back up, the elasticity of the lungs and chest wall pushes air out of the lungs. The lungs have no skeletal muscles of their own. The work of breathing is done by the diaphragm, the muscles between the ribs (intercostal muscles), the muscles in the neck, and the abdominal muscles.
As the diaphragm relaxes into place, it presses the carbon dioxide out of your lungs. If your chest suffers from trauma, it can tear a hole in your lung tissue, allowing air to escape into the chest cavity. This air then presses on the lungs, preventing them from expanding. This is called a collapsed lung.our lungs are tightly packed into the chest cavity, or thoracic cavity, along with your heart and a portion of your esophagus. The diaphragm divides the thoracic cavity from the abdomen. To give your lungs room to expand, the diaphragm pulls down towards the abdomen, allowing you to inhale.