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The diaphragm is the major muscle responsible for breathing. It is a thin, dome-shaped muscle that separates the abdominal cavity from the thoracic cavity. During inhalation, the diaphragm contracts, so that its center moves caudally (downward) and its edges move cranially (upward). This compresses the abdominal cavity, raises the ribs upward ...
accessory muscle use (using muscles other than the diaphragm and intercostal muscles during breathing (e.g., sternocleidomastoid)) retractions (collapse of parts of the chest during breathing) (e.g., suprasternal, substernal, sternal, intercostal, subcostal, supraclavicular) head bobbing (in infants) grunting; tachypnea (too fast breathing)
Labored breathing is distinguished from shortness of breath or dyspnea, which is the sensation of respiratory distress rather than a physical presentation.. Still, many [2] simply define dyspnea as difficulty in breathing without further specification, which may confuse it with e.g. labored breathing or tachypnea (rapid breathing). [3]
The xiphoid process plays a role in the attachment of many muscles, including the abdominal diaphragm, a muscle necessary for normal breathing. Additionally, it serves as an attachment point for the rectus abdominis muscles, commonly known as the "abs."
An accessory muscle can also refer to a muscle that is not primarily responsible for movement but does provide assistance. [1] Examples of such muscles are the accessory muscles of respiration where the sternocleidomastoid and the scalene muscles (anterior, middle and posterior scalene) are typically considered accessory muscles of respiration. [6]
The internal oblique performs two major functions. Firstly as an accessory muscle of respiration, it acts as an antagonist (opponent) to the diaphragm, helping to reduce the volume of the chest cavity during exhalation. When the diaphragm contracts, it pulls the lower wall of the chest cavity down, increasing the volume of the lungs which then ...
Checking for general respiratory distress, such as use of accessory muscles to breathe, abdominal breathing, position of the patient, sweating, or cyanosis; Checking the respiratory rate, depth and rhythm - Normal breathing is between 12 and 20 in a healthy patient, with a regular pattern and depth.
Animation of diaphragmatic breathing with the diaphragm shown in green. Diaphragmatic breathing, abdominal breathing, belly breathing, [1] or deep breathing, [2] is breathing that is done by contracting the diaphragm, a muscle located horizontally between the thoracic cavity and abdominal cavity.