The costodiaphragmatic recesses are the largest and clinically vital recesses. It is an entrenched channel which is located at the lower border of the chest wall in the middle of the costal pleura and the diaphragmatic pleura. They are deepest after forced expiration and shallowest after forced inspiration. Costodiaphragmatic Recess Structure The costodiaphragmatic [...]
The suprapleural membrane, also known as Sibson fascia is a strong fascial connective tissue layer above the superior thoracic inlet on each side, placed on top of the tips of the lungs. Suprapleural Membrane It can be said to be an extension of the tendinous attachment of the scalenus minimus muscle. It slopes [...]
The interventricular septum is the wall of the heart which is located intermediately towards the right and left ventricles. Parts The left ventricle is located relatively posterior towards the right ventricle. Therefore, the anterior wall and a few of the wall on the right portion of the left ventricle are created by the interventricular septum. [...]
The left atrium is among the four compartments of the heart, found on the left posterior side. Its primary functions are to perform as a stock chamber for blood recurring from the lungs as well as in order to function as a pump in order to transport blood towards other areas of the heart. [...]
The costal cartilages are made up of hyaline cartilage and give elasticity and mobility of the chest wall. 1st to 7th cartilages attach the respective ribs with the lateral margin of the sternum and from 1st to 7th they develop lengthwise. 8th to 10th cartilages are attached together with the lower margin of the cartilage [...]
Origin It appears from posterior aspects of: (a) first part of the subclavian artery on the left side and (b) second part of the subclavian artery on the right side. Course and Conclusion The artery arches backwards above the cupola of the pleura and on reaching the neck of the very first rib it ends [...]
It's the short, wide branch of the subclavian artery. Origin, Course and Conclusion The thyrocervical trunk originates from the upper aspect of the initial part of the subclavian artery in the medial margin of the scalenus anterior and lateral to the origin of vertebral artery. It instantly ends into 3 branches. Branches These are: Inferior [...]
The three pairs of ribs 8, 9 and 10 are referred to as false ribs. They are just like the true ribs that are connected to the spine at the back. The main difference in true ribs and false ribs is that the false ribs attach at the front. Rather than attaching to the sternum, [...]
The foramen ovale is found in the fetal heart where it allows blood to go inside the left atrium from the right atrium. It is among the two fetal cardiac shunts, the ductus arteriosus is the other one which allows blood to bypass the pulmonary circulation that still discharges towards the right ventricle. The foramen [...]
The sternalis is a long thin muscle which expands via the sternocleidomastoid to the rectus abdominis accompanying the sternum. Compared to bilateral variant the sternalis is occurs twice as unilateral variant and develops the same in male and female patients. The muscle is superficial and medial towards the pectoralis major muscle. Sternalis Structure [...]