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Atlas of Human Embryos Chapter   Figure

T-2 spinal ganglion, aorta, aortic semilunar valve, ascending aorta, conus septum, ectomeninx, elbow area, esophageal muscularis, humerus, infundibulum of right ventricle, left atrium, marginal vein, phrenic nerve, pleural cavity, precardinal vein, right pulmonary artery, shaft of rib 2, superior vena cava, sympathetic trunk, trachea, transverse sinus of pericardial cavity, ulna, vagus nerve (CN X)

A section through the aortic semilunar valve.

Observe:
1. The conus septum separating the aortic semilunar valve from the infundibulum of the right ventricle.
2. The cranial edge of the pleural cavity on the right between the rib and superior vena cava.
3. The aorta to the left of the esophagus.
4. The phrenic nerve dorsolateral to the pericardial cavity and the vagus nerve lateral to the trachea.
5. The elbow joint area between the humerus and ulna.


Keywords: T-2 spinal ganglion, aorta, aortic semilunar valve, ascending aorta, conus septum, ectomeninx, elbow area, esophageal muscularis, humerus, infundibulum of right ventricle, left atrium, marginal vein, phrenic nerve, pleural cavity, precardinal vein, right pulmonary artery, shaft of rib 2, superior vena cava, sympathetic trunk, trachea, transverse sinus of pericardial cavity, ulna, vagus nerve (CN X)

Source: Atlas of Human Embryos.