WebA) contraction of the diaphragm muscle helps increase the size of the thoracic cavity. B) relaxation of the external intercostal muscles helps increase the size of the thoracic cavity. C) increased intrapulmonary volume causes inhaled gases to spread out. D) the decreased gas pressure produces a partial vacuum that forcibly sucks air in

Biol204 animal ecophysiology worksheet 2 and 3 20 - Course Hero

WebDuring exhalation, the diaphragm muscle relaxes and moves upward. The intercostal muscles pull the ribs and sternum outward. These muscles are also attached to the … WebDuring inhalation, the diaphragm contracts downward,bringing the pleural downward and expanding the thoracic cavity and thelungs. During exhalation, the diaphragm muscle relaxes and movesupward. The intercostal muscles pull the ribs and sternum outward.These muscles are also attached to the parietal pleuraland expand the lungs. bissell floor cleaner mop

AP 2 Respiratory System Flashcards Quizlet

WebInspiration occurs when the diaphragm and the external intercostal muscles contract. Expiration occurs when the diaphragm and the intercostal muscles relax. The contraction or relaxation of muscles … WebWhen you exhale, our diaphragm muscle relaxes and moves upwards, and the intercostal muscles relax and move downwards and inwards. This reduces the volume of the lungs, which forces air... WebDuring exhalation, the diaphragm and intercostal muscles relax, causing the chest cavity to contract and increasing the pressure inside the lungs. This forces air out of the lungs. Breathing is a complex process that is essential for life and involves a number of muscles and organs that work together to move air in and out of the lungs. b. darshan doshi drum classes