What is the crus of the diaphragm?
What is the crus of the diaphragm?
n. Any of the muscular origins of the diaphragm from the bodies of the upper lumbar vertebrae that pass the aorta upward to the central tendon.
What is the crus in anatomy?
Medical Definition of crus 1 : the lower or hind limb especially between the knee and the ankle or tarsus : shank. 2 : any of various anatomical parts likened to a leg or to a pair of legs: as. a : either of the diverging proximal ends of the corpora cavernosa.
What is the difference between crus and crura?
The word [crus] is Latin (cruris) and refers to the leg, or region of the shin. It is commonly used to mean “leg” or “pillar”. The plural form is [crura].
Where is the left crus?
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 region is the diaphragm in?
The diaphragm is an upward curved, c-shaped structure of muscle and fibrous tissue that separates the thoracic cavity from the abdomen. The superior surface of the dome forms the floor of the thoracic cavity, and the inferior surface the roof of the abdominal cavity.
What is the function of crus?
The crus penis on each side then fuse to form the corpus cavernosum. During the erection process, the ischiocavernosus muscle contracts intermittently to force arterial blood in through the crus penis and increase the pressure within the corpus cavernosum.
What is crus in male reproductive system?
Traced from behind forward, each crus begins by a blunt-pointed process in front of the tuberosity of the ischium, along the perineal surface of the conjoined (ischiopubic) ramus….
| Crus of penis | |
|---|---|
| FMA | 18248 |
| Anatomical terminology |
Why is left crus bigger than crus?
They are tendinous and blend with the anterior longitudinal ligament of the vertebral column. The right crus, larger and longer than the left, arises from the front of the bodies and intervertebral fibrocartilages of the upper three lumbar vertebrae.
Where does esophagus pass through diaphragm?
The esophageal hiatus is located in the muscular aspect of the diaphragm near the right crus. It is located at the level of T10. The posterior and anterior vagal nerves are also found passing through this hiatus.
Is crus plural?
Crus (plural crura) can also refer to other anatomical structures that are leg-shaped: crura of antihelix.
What is the crura of the diaphragm?
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. They take their name from their leg-shaped appearance – crus meaning leg in Latin.
What are the anterior and posterior boundaries of the diaphragmatic crura?
The space is delimited anteriorly and laterally by the diaphragmatic crura as they pass from the anterolateral aspects of the vertebral bodies and ascend to decussate in front of the aorta. Posteriorly, boundaries include the ventral aspect of the distal thoracic and proximal lumbar vertebral bodies.
What is the best indicator of traumatic diaphragmatic injury?
However, normal thickness variations related to respiration or the patient’s age limit the use of this parameter as an indicator of traumatic diaphragmatic injury. Lymphadenopathy. Lymph nodes dorsal to the diaphragmatic crura drain the posterior mediastinum and diaphragm as well as the lumbar regions (, 3 ).
What are the crus and fibrocartilage?
They are tendinous and blend with the anterior longitudinal ligament of the vertebral column . The right crus, larger and longer than the left, arises from the front of the bodies and intervertebral fibrocartilages of the upper three lumbar vertebrae.