Where do crura attach?
The crura are attached to the anterior aspect of the bodies of the 1st, 2nd and 3rd lumbar vertebrae. The muscle fibres, extending from their bony attachments, converge on a central tendon.
What is Retrocrural?
The retrocrural space (RCS) is a small triangular area within the most inferior posterior mediastinum and is bordered by two diaphragmatic crura. This area includes the aorta, the azygos and hemiazygos veins, nerves, thoracic duct, and lymph nodes, which are called the retrocrural lymph nodes [5].
What is the left crus of diaphragm?
left crus of di·a·phragm the muscular origin of the diaphragm from the upper two or three lumbar vertebrae that ascends to the left of the aorta to reach the central tendon.
What are the left and right crus?
The right crus, larger and longer than the left, arises from the anterior surfaces of the bodies and intervertebral fibrocartilages of the upper three lumbar vertebrae, while the left crus arises from the corresponding parts of the upper two only.
What is the function of crura of diaphragm?
Crural diaphragm provides tonic or sustained increase in the EGJ pressure during periods of abdominal compression, straight leg raise, and valsalva maneuver.
What is a Crural in anatomy?
crural • \KRUR-ul\ • adjective. : of or relating to the thigh or leg; specifically : femoral.
What is Retrocrural lymph nodes?
Retrocrural lymph nodes are located between the supradiaphragmatic space and the retroperitoneal space and they communicate with the posterior mediastinal nodes and para-aortic nodes in the upper abdomen 14.
What are aortic nodes?
The para-aortic lymph nodes (PANs) are located around the abdominal aorta and inferior vena cava and are the regional lymph nodes of the intraperitoneal organs.
What is the function of diaphragm?
The diaphragm is a muscle that helps you inhale and exhale (breathe in and out). This thin, dome-shaped muscle sits below your lungs and heart.
What passes through crus of diaphragm?
It is placed superior, anterior, and slightly left of the aortic hiatus, and transmits the esophagus, the vagus nerve, the left inferior phrenic vessels, and some small esophageal arteries from left gastric vessels. The right crus of the diaphragm loops around forming a sling around the esophagus.
What is the function of Crural?
What is the Definition of crural?
Medical Definition of crural : of or relating to the thigh or leg specifically : femoral crural artery crural nerve.
Where does the term diaphragmatic crura come from?
Diaphragm and Diaphragmatic Crura. The term crura, the plural of crus, is derived from the Latin word cruralis, meaning “leg.” The tendinous aspect of the right crus attaches to the ventral surface of the lumbar vertebral bodies and to the intervertebral fibrocartilage of the first three lumbar vertebrae.
Where are the left and right crus of the diaphragm?
(Left crus and right crus are at bottom center.)+ The crus of diaphragm (pl. crura), refers to one of two tendinous structures that extends below the diaphragm to the vertebral column. There is a right crus and a left crus, which together form a tether for muscular contraction.
Where is the peripheral diaphragm located in the body?
The peripheral diaphragm is formed by muscular fibers attached to three different anatomic regions: the sternum, inferior ribs, and lumbar region.
What are the two tendinous structures below the diaphragm?
The crus of diaphragm (pl. crura), refers to one of two tendinous structures that extends below the diaphragm to the vertebral column.