A report on EsophagusLarynx and Vagus nerve

The digestive tract, with the esophagus marked in red
Anatomy of the larynx, anterolateral view
Plan of the upper portions of the glossopharyngeal, vagus, and accessory nerves.
The esophagus is constricted in three places.
Sagittal section of the larynx and upper part of the trachea.
H&E stained fibers of the vagus nerve (bottom right) innervate the sinoatrial node tissue (middle left)
A mass seen during an endoscopy and an ultrasound of the mass conducted during the endoscopy session.
The basic parts of the human larynx.
Inferior view of the human brain, with the cranial nerves labeled.
Vocal cords abducted and adducted
Section of the neck at about the level of the sixth cervical vertebra
Extrinsic laryngeal muscles
Transverse section of thorax, showing relations of pulmonary artery
Image of endoscopy
The arch of the aorta, and its branches
Endoscopic image of an inflamed human larynx
Dura mater and its processes exposed by removing part of the right half of the skull, and the brain
Larynx. Deep dissection. Anterior view.
The tracheobronchial lymph glands
Larynx. Deep dissection. Posterior view.
Section of the medulla oblongata at about the middle of the olive
Hind- and mid-brains; postero-lateral view
Upper part of medulla spinalis and hind- and mid-brains; posterior aspect, exposed in situ
The right sympathetic chain and its connections with the thoracic, abdominal, and pelvic plexuses
The celiac ganglia with the sympathetic plexuses of the abdominal viscera radiating from the ganglia
The position and relation of the esophagus in the cervical region and in the posterior mediastinum, seen from behind
The thyroid gland and its relations
The thymus of a full-term fetus, exposed in situ
Deep dissection of vagus nerve
Vagus nerve – dissection

During swallowing, the epiglottis tilts backwards to prevent food from going down the larynx and lungs.

- Esophagus

It is situated just below where the tract of the pharynx splits into the trachea and the esophagus.

- Larynx

The right vagus nerve gives rise to the right recurrent laryngeal nerve, which hooks around the right subclavian artery and ascends into the neck between the trachea and esophagus.

- Vagus nerve

Its smooth muscle is innervated by involuntary nerves (sympathetic nerves via the sympathetic trunk and parasympathetic nerves via the vagus nerve) and in addition voluntary nerves (lower motor neurons) which are carried in the vagus nerve to innervate its striated muscle.

- Esophagus

Muscles of the larynx (speech).

- Vagus nerve

The larynx is innervated by branches of the vagus nerve on each side.

- Larynx
The digestive tract, with the esophagus marked in red

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Conducting passages


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Conducting passages
Lymph nodes of the trachea.
Tracheal diverticulum as seen on axial CT imaging
Tracheal system of dissected cockroach. The largest tracheae run across the width of the body of the cockroach and are horizontal in this image. Scale bar, 2 mm.
The tracheal system branches into progressively smaller tubes, here supplying the crop of the cockroach. Scale bar, 2 mm.
thumb|Cross section of a trachea and esophagus
The sternohyoid and sternothyroid muscles lie on top of the upper part of the trachea
The thyroid gland also lies on top of the trachea, and lies below the cricoid cartilage.
Cross-section of the trachea, with pseudostratified ciliated columnar epithelium and goblet cells labelled
Magnified cross-section of the cartilage of the trachea.
Coronal section of larynx and upper part of trachea
alt=Trachea (mammal) cross-section high resolution|Trachea (mammal) cross-section high resolution
alt=Trachea (mammal) cross-section low resolution|Trachea (mammal) cross-section low resolution

The trachea, also known as the windpipe, is a cartilaginous tube that connects the larynx to the bronchi of the lungs, allowing the passage of air, and so is present in almost all air-breathing animals with lungs.

Behind the trachea, along its length, sits the oesophagus, followed by connective tissue and the vertebral column.

To its sides run the carotid arteries and inferior thyroid arteries; and to its sides on its back surface run the recurrent laryngeal nerves in the upper trachea, and the vagus nerves in the lower trachea.