Covers the oesophagus as a collapsed muscular tube about 25 cm long, from its start at C6 to its end at T11 where it enters the stomach through the diaphragm. It sets out the three parts with their neighbouring structures, the course and frontal and sagittal curvatures, and the three anatomical constrictions. It finishes with the arterial, venous and lymphatic drainage.
Topic 8 of 44 in the MU Sofia syllabus for Anatomy (Internal Organs+Glands) (Medicine, Years 1 and 2). The free AceMed note covers it in 6 sections, about 372 words (3 min of reading), with 10 flashcards.
In this note
ESOPHAGUS
Parts of the Eosophagus:
Course of the esophagus:
Curvatures :
Constrictions:-
Blood Supply:
ESOPHAGUS
It is Collapsed at rest.
Flat in the upper 2/3 & rounded in lower 1/3
It is a musular tube (25 cm) that pushes the swallowed food to the stomach.
It passes the phyrynx in the neck and stomach in the abdomin.
Starts at C6 vertebra as a continuation of the pharynx (at lower border of cricoid cartilage)
Ends at T11 vertebra (at the cardiac orifice of the stomach after passing through the diaphragm).
Parts of the Eosophagus:
1 Cervical part: from C6 - T
ventrally : trachea
dorsally : prevertebral layer
laterally : cervical - neuro - vascular bundle
2 Thoracic part from T2 - T10
ventrally : trachea
laterally : vagus nerves
right side : zygous vein
left side : descending aorta
dorsally : thoracic aorta & thoacic duct.
3 Abdominal part from T10 - T11
ventrally : oesophagus is in contact with the liver.
dorsally : diaphragm.
Course of the esophagus:
It passes through the thorax in front of the vertebral column.
As it approches the diaphragm it goes anterioly and to the left.
* The esophagous passes through the muscular part of the diaphragm at the level of T10 vertebra.
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