DIAPHRAGMATIC BREATHING & CORE Flashcards
What is the structure of the diaphragm?
The diaphragm is a dome-shaped muscle located in the thorax, separating the thorax (chest) from the abdomen.
Why is the diaphragm asymmetric, with the left side slightly more inferior than the right?
The diaphragm is asymmetric due to the liver on the right side, and possibly the heart on the left pushing it slightly downward.
How many large openings does the diaphragm have, and what is their function?
The diaphragm has three large openings that allow structures to pass between the chest and the abdomen.
What structures pass through the esophageal opening of the diaphragm?
The esophagus and the vagus nerve, which controls much of the digestive system, pass through the esophageal opening.
What structures pass through the aortic opening of the diaphragm?
The aorta, the main artery transporting blood from the heart, and the thoracic duct, a main vessel of the lymphatic system, pass through the aortic opening.
What structure passes through the caval opening of the diaphragm?
The inferior vena cava, a large vein that transports blood to the heart, passes through the caval opening.
Where does the sternal part of the diaphragm originate?
It originates as two fleshy slips from the back of the xiphoid process.
Where does the costal part of the diaphragm originate?
It originates from the inner surfaces of the cartilages and adjacent parts of the lower sixth ribs on each side, interdigitating with the transversus abdominis.
Describe the origin of the medial lumbocostal arch of the diaphragm.
It is a tendinous arch in fascia covering the psoas major. Medially, it attaches to the side of the body of L1, and laterally, it connects to the front of the L1 transverse process (TVP).
Describe the origin of the lateral lumbocostal arch of the diaphragm.
It is a tendinous arch in fascia covering the upper part of the quadratus lumborum. Medially, it attaches to the front of the L1 TVP, and laterally, it connects to the lower border of the 12th rib.
Where does the diaphragm insert?
The diaphragm inserts into a central tendon.
How do the muscle fibers from the right crus contribute to the diaphragm’s function?
The fibers from the right crus traverse up on the left side, encircling the esophageal orifice in a sling-like loop, acting as a valve to help prevent regurgitation of stomach contents into the esophagus.
What are the primary muscles of respiration?
The primary muscles of respiration are the diaphragm and the external intercostals.
Name the accessory muscles of respiration.
The accessory muscles of respiration include the sternocleidomastoid (SCM), scalenes, pectoralis minor, serratus anterior, latissimus dorsi, and serratus posterior superior.
What is the primary role of the diaphragm in respiration?
The diaphragm is a muscle of inspiration and exhalation. During inhalation, it contracts and flattens, expanding the chest cavity. During exhalation, it relaxes and elevates, helping push air out of the lungs.
How do the diaphragm and external intercostal muscles work together during inhalation?
During inhalation, the diaphragm contracts and moves downward, while the external intercostals raise the anterior chest wall like bucket handles, making the chest cavity larger and allowing air to enter.
What happens to the rib cage and diaphragm during exhalation?
During exhalation, the rib cage and chest wall sag and return to their original position, while the diaphragm relaxes and elevates, pushing air out of the lungs.
How does the diaphragm assist in urination and bowel movements?
The diaphragm aids in urination and bowel movements by contracting and increasing intra-abdominal pressure, which works with the anterior abdominal muscles to assist in processes like defecation, urination, and vomiting.
Explain the diaphragm’s role in the thoracoabdominal pump and lymph flow.
When the diaphragm descends during inhalation, it decreases intrathoracic pressure and increases intra-abdominal pressure, which compresses the inferior vena cava (IVC) and aids in blood flow to the heart. This action also compresses abdominal lymph vessels, aiding lymph flow through the thoracic duct, which is further assisted by negative intrathoracic pressure and valves preventing backflow.
What is the primary goal of diaphragmatic breathing?
Diaphragmatic breathing helps the patient learn to consciously use their diaphragm during breathing.
What are the breathing effects of diaphragmatic breathing?
Diaphragmatic breathing strengthens the diaphragm, decreases ventilation rate, reduces oxygen demand, and increases the efficiency of gas exchange.
What are the non-respiratory effects of diaphragmatic breathing?
It increases lymphatic flow, improves perceived relaxation, helps break the pain cycle, aids in pain management, and assists with excretory functions like bowel movements, urination, and vomiting.
Why is assessing for dysfunctional breathing patterns important?
Dysfunctional breathing can indicate that secondary muscles are being used instead of the diaphragm, affecting respiratory efficiency and suggesting issues like paradoxical or apical breathing.