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Esophagus/Pharynx. Sarah Coyan /Emma Cressey. Facts.

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esophagus pharynx


Sarah Coyan/Emma Cressey

  • The esophagus is approximately 25cm long. Muscles contract in waves to move the food down the esophagus (peristalsis). This means that food would get to a person‘s stomach, even if they were standing on their head.
  • The diameter of your esophagus is 24mm, the diameter of a quarter.
  • The thickness of your esophageal wall is 4mm, the width of 3 pennies.

layers of the esophagus
Layers of the Esophagus

Fibrous covering.

b. Divided fibers of longitudinal muscular coat.

c. Transverse muscular fibers.

d.Submucous or areolar layer.


f. Mucous membrane, with vessels and part of a lymphoid nodule.

g. Stratified epithelial lining.

h. Mucous gland.

Gland duct.

diseases and malfunctions
Diseases and Malfunctions
  • Barrett’s Esophagus
  • Heartburn
  • Throat Cancer –adenocarcinoma
  • Allergies
  • Choking
barrett s esophagus
Barrett’s Esophagus
  • Tissue in esophagus is replaced with tissue similar to the tissue in the intestines
  • People with GERD (gastroesophageul reflux disease) are more likely to develop Barrett’s esophagus
  • Endoscopic treatment
  • Surgical removal if severe

  • Sphincter between esophagus and stomach doesn’t close properly or completely
  • Stomach acids leak into esophagus and dissolve lining
  • If severe, called gastroesophageal reflux disease (GERD)
  • Heartburn medication

throat cancer
Throat Cancer
  • Tumors form in the esophagus
  • Chemotherapy, surgical removal of tumors, or radiation therapy

  • Immune system overreacts to a usually non-harmful substance
  • Allergy medicine , epinephrine

  • Object gets lodged in the pharynx/airway, preventing breathing
  • Heimlich manuver