Carotid sheath sternum. The four major structures contained in the carotid sheath are: The carotid artery lies medial to the internal jugular vein, and the vagus nerve is situated posteriorly between the two vessels. In the upper part, the carotid sheath also contains the glossopharyngeal nerve (IX), the accessory nerve (XI), and the hypoglossal nerve (XII), which pierce the fascia of the carotid sheath. The ansa cervicalis is embedded in the anterior wall of sheath. It is formed by "descendens hypoglossi" (C1) and "descendens cervicalis" (C2-C3). The three major fascial layers in the neck contribute to the carotid sheath: the investing fascia,
Errors of the Human Body screening, Sheean himself said, "The film is about a breakdown in communication, both on the surface in the characters and internally with the cells." Errors of the Human Body Errors of the Human Body is a 2012 psychological thriller directed by Eron Sheean and starring Michael Eklund. Dr. Geoff Burton (Eklund), a brilliant genetics researcher, is invited to a lab in Dresden, only to discover a lethal virus is being created, which he may have unintentionally caused and be its first victim. This mystery is set against Dr. Burton trying to find redemption and peace from a past haunted by