Esophagus Flashcards
(40 cards)
What are the parts of the esophagus?
Cervical, thoracic, Abdominal
At what landmark does the anteri posterior curvature of the esophagus presents?
C6
At what landmark does the lateral curvature of the esophagus presents?
T5-T7
The esophagus passes the arch of the aorta at what level?
T4
The esophagus is passed by the left bronchus at what level?
T6
The esophageal opening of the diaphragm is opposite to
T10
What arteries supply the esophagus
The bronchial artery- branch of aorta
Esophageal branch- inferior thyroid artery
Ascending branch of the left gastric artery
The cervucal aspect of the esophagus drains into the ?
Inferior thyroid vein
The thoracic aspect of the esophagus drains into the ?
Hemiazygous and azygous vein
The abdominal aspect of the esophagus drains into the ?
Left gastric vein and partially into inferior hemiazygous
Esophageal varicose is caused by?
Portal hypertension
The esophagus is supplied by which sympathetic nerves?
T5-T9
They form the esophageal plexus
What is the role of the vagus nerve?
Sends signals to ganglia inside the esophagus wall
These ganglia then tell the muscles to contract rhythmically (peristalsis) and open the lower esophageal sphincter (LES) to let food into the stomach.
What happens if the myenteric plexus is destroyed?
the LES stays tightly shut because there’s no command to relax. That’s why food gets stuck.
Happens in achalasia
What often cause congenital anomolies in the esophagus?
The failure of the causal growth of the tracheoesophageal septum
What occurs in esophageal atresia?
The esophagus is not continuous with its lower section causing a separation in the continuity of the esophagus
What causes esophageal atresia?
During embryonic development, the foregut fails to separate properly into the trachea (front) and esophagus (back)
The esophageal atresia usually presents with a birth defect called?
Tracheoesophageal fistul
What are the features of esophageal atresia?
Coughing, cyanosis, choking
What is the treatment for atresia?
Surgical stretching of the stricture
Achalasia is
Esophageal achalasia, often referred to simply as achalasia, is a failure of smooth muscle fibers to relax, which can cause the lower esophageal sphincter to remain closed.
Achalasia is due to congenital absence of nerve cells of esophagus.
The autosomal recessive disorder adrenocorticotrophic hormone resistant adrenal insufficiency is cased by
Gene mutations on chromosome 12
A patient presents with achalasia and upon x ray it displays ?
The bird’s beak appearance is seen on a barium swallow X-ray (esophagram).
The tracheoesophageal fistula is?
Abnormal communication between the trachea and the esophagus