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- The upper parts of the esophagus and the upper esophageal sphincter receive blood from the inferior thyroid artery, the parts of the esophagus in the thorax from the bronchial arteries and branches directly from the thoracic aorta, and the lower parts of the esophagus and the lower esophageal sphincter receive blood from the left gastric artery and the left inferior phrenic artery.
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Esophageal (oesophageal in British English) arteries are a group of arteries from disparate sources supplying the esophagus. The blood supply to the esophagus can roughly be divided into thirds, with anastamoses between each area of supply.
- Esophagus - Wikipedia
The esophagus passes through the thoracic cavity into the...
- Esophageal branches of thoracic part of aorta - Wikipedia
Esophageal branches of thoracic part of aorta. The...
- Esophagus - Wikipedia
The esophagus passes through the thoracic cavity into the diaphragm into the stomach. The esophagus may be affected by gastric reflux, cancer, prominent dilated blood vessels called varices that can bleed heavily, tears, constrictions, and disorders of motility.
The arterial supply to the esophagus comes from the esophageal branches that arise from multiple arteries, including the inferior thyroid arteries, thoracic aorta, bronchial arteries, left gastric artery, and left inferior phrenic artery.
Esophageal branches of thoracic part of aorta. The esophageal arteries four or five in number, arise from the front of the aorta, and pass obliquely downward to the esophagus, forming a chain of anastomoses along that tube, anastomosing with the esophageal branches of the inferior thyroid arteries above, and with ascending branches from the ...
- Esophageal Secretion
- Sensory Physiology
- Motor Physiology
The esophageal submucosa contains glands, although there are fewer numbers of glands than in the rest of the gastrointestinal tracts. The esophageal submucosal glands secrete the following substances: water, bicarbonate, mucins, epidermal growth factor, and prostaglandins. Secretions of the esophageal submucosal glands are involved in mucosal clear...
Vagal afferents merging from the esophageal smooth muscle layer and serosa are sensitive to muscle stretch, whereas vagal afferents in the mucosa are sensitive to various stimuli including chemical (acid), thermal (cold or hot), and mechanical intraluminal stimuli.8 In general, vagal afferents do not play a direct role in visceral pain transmission...
Primary and secondary peristalsis
The coordinated motor pattern of the esophagus initiated by the act of swallowing is called primary peristalsis. A rapidly progressing pharyngeal contraction wave transfers the bolus through the relaxed UES into the esophageal body, and a progressive circular contraction begins in the upper esophagus and proceeds distally along the esophageal body to propel the bolus through the relaxed LOS. The mean peak pressures amplitudes are 53 ± 9 mmHg in the proximal esophagus, 35 ± 6 mmHg in the middl...
Deglutitive inhibition.
Studies using animal models demonstrated that esophageal smooth muscle was hyperpolarized before the occurrence of a peristaltic contraction.25–28 The muscle hyperpolarization lasts progressively longer in the distal esophageal segments and is followed by depolarization. Because muscle contraction is inhibited during hyperpolarization, the timing of esophageal peristaltic contractions is influenced by the strength and duration of this inhibition. Because of methodological limitations, electro...
Control of esophageal peristalsis.
Peristalsis in the striated muscle part of the esophagus is entirely dependent on central vagal pathways. It is mediated by sequential excitation of lower motor neurons originated in the nucleus ambiguus through the vagus nerve (Fig. 2).32,33 Control of peristalsis in the smooth muscle part of the esophagus is more complicated. Peristalsis in the thoracic esophagus is mediated by both central and peripheral mechanisms. In contrast to the striated muscle portion, sequential excitation of vagal...
- E. Yazaki, D. Sifrim
- 2012
Aug 30, 2023 · The arteries supplying the esophagus are generally named ‘esophageal arteries’. The only difference between them is given by their origins according to the different esophagus divisions: Those supplying the cervical part originate from the inferior thyroid artery, a branch of the thyrocervical trunk of the subclavian artery.
- Medical Content
- 30 min
Jan 21, 2018 · Human body. Circulatory System. Esophageal artery. The esophagus is a muscular, tube-like organ that assists the pharynx in directing food to the stomach. The esophagus receives its blood supply...
