MeanDB

Esophagus Meaning

What is an Esophagus?

The esophagus is a muscular (smooth muscle) tube that connects the pharynx in the neck (pharynx, C6) and the stomach (cardia, T11) in the abdomen. Its average length is 25-30 cm. The distance from the incisors to the cardioesophageal junction is approximately 40 cm in males and 37 cm in females (when measured with an endoscope).

The esophagus is in front of the vertebral corpus, behind the trachea and heart. It generally proceeds on the midline but is deviated to the left in two places; as the arch passes behind the aorta and passes through the esophageal hiatus (deviates to the left and forward).

Esophagus , alimentary canal. The esophagus is a 25 cm long muscular canal located between the pharynx and the stomach. It allows the swallowed liquids or nutrients to pass from the pharynx to the stomach. The esophagus begins at the 6th cervical vertebra (C6) level at the lower border of the cricoid cartilage and ends at the cardiac sphincter of the stomach at the 11th thoracic vertebra (T11). The cardiac sphincter, which is located at the junction of the stomach and esophagus and is in a muscular ring sheath, provides the passage of nutrients to the stomach.

Sections of the Esophagus

  1. Cervical Esophagus : 6. 1-2 with cervical vertebra. The part between the thoracic vertebrae is about 5 cm long.
  2. Thoracic (Mediastinal) Esophagus : 1-2. It starts from the thoracic vertebrae and extends to the esophageal hiatus in the diaphragm and is 20 cm long.
  3. Abdominal Esophagus : It is a 2-5 cm portion extending from the hiatus to the cardia.

Layers (Layers) of the Esophagus

The esophagus consists of histologically mucous , submucosa , muscularis and fibrous layers. The muscular layers of the esophagus are two. There is a circular muscle layer inside and a longitudinal muscle layer outside.

The upper 1/3 of the esophagus is striped muscle, the middle part is striped and smooth muscle, and the lower part is smooth muscle.

Mucosa : It is the innermost layer of the esophagus. It is a thick, nonkeratinized (soft), multilayer squamous epithelium (stratified squamous ephitelium). It is the continuation of the oropharyx mucosa.

Submucosa : It is a loose connective tissue. The thick submucosa is the strongest layer of the esophagus (The surgeon can count on this layer in anastomosis.)

Muscle Layer of the esophagus: There is a circular longitudinal muscle layer inside and outside. The top part is striped muscle (voluntary worker), the second part consists of striped and smooth muscle fibers (involuntary worker). The remaining bottom section consists entirely of smooth muscles.

Adventitia (adventitia): Serosa is not found in the cervical and mediastinal esophagus. Instead, it has a loose and weak connective tissue (adventitia). Anastomosis does not have a carrier.

Esophageal motility disorders involve the smooth muscles in the lower part. If a surgical esophageal myotomy will be performed, it is necessary and sufficient to make the incision along this section ( bottom ⅓).

What is the function of esophagus?

As the food passes through the esophagus, the esophagus makes peristaltic movements. No digestion takes place in the esophagus. Food passes through the esophagus to the stomach. The esophagus connects the mouth and stomach. Food passes through the esophagus and reaches the stomach. There is no digestion in the food pipe, but it contributes to mechanical digestion to a small extent by contracting and relaxing.

How do you know if your esophagus is damaged?

  • Esophageal Cancer
    • Swallowing difficulty (dysphagia)
    • Involuntary weight loss
    • Chest pain, pressure or burning in the chest
    • Worsening indigestion or heartburn
    • Coughing or hoarseness
  • Akalazya Disease
    • Difficulty swallowing,
    • The feeling of stinging and snagging while eating,
    • Difficulty when swallowing solid and liquid foods,
    • The desire to drink water after every bite,
    • Chest pain,
    • Burning sensation in the chest,
    • Recovery of undigested foods by mouth (regurgitation)
    • Belching difficulty.

 

Esophagus Meaning

Updated: 16 November 2021, 20:53