Branchial pouch

(Redirected from Fourth Pharyngeal Pouch)
Jump to navigation Jump to search

Template:Infobox Embryology

WikiDoc Resources for Branchial pouch

Articles

Most recent articles on Branchial pouch

Most cited articles on Branchial pouch

Review articles on Branchial pouch

Articles on Branchial pouch in N Eng J Med, Lancet, BMJ

Media

Powerpoint slides on Branchial pouch

Images of Branchial pouch

Photos of Branchial pouch

Podcasts & MP3s on Branchial pouch

Videos on Branchial pouch

Evidence Based Medicine

Cochrane Collaboration on Branchial pouch

Bandolier on Branchial pouch

TRIP on Branchial pouch

Clinical Trials

Ongoing Trials on Branchial pouch at Clinical Trials.gov

Trial results on Branchial pouch

Clinical Trials on Branchial pouch at Google

Guidelines / Policies / Govt

US National Guidelines Clearinghouse on Branchial pouch

NICE Guidance on Branchial pouch

NHS PRODIGY Guidance

FDA on Branchial pouch

CDC on Branchial pouch

Books

Books on Branchial pouch

News

Branchial pouch in the news

Be alerted to news on Branchial pouch

News trends on Branchial pouch

Commentary

Blogs on Branchial pouch

Definitions

Definitions of Branchial pouch

Patient Resources / Community

Patient resources on Branchial pouch

Discussion groups on Branchial pouch

Patient Handouts on Branchial pouch

Directions to Hospitals Treating Branchial pouch

Risk calculators and risk factors for Branchial pouch

Healthcare Provider Resources

Symptoms of Branchial pouch

Causes & Risk Factors for Branchial pouch

Diagnostic studies for Branchial pouch

Treatment of Branchial pouch

Continuing Medical Education (CME)

CME Programs on Branchial pouch

International

Branchial pouch en Espanol

Branchial pouch en Francais

Business

Branchial pouch in the Marketplace

Patents on Branchial pouch

Experimental / Informatics

List of terms related to Branchial pouch


Overview

In the development of vertebrate animals, Pharyngeal or branchial pouches form on the endodermal side between the branchial arches, and pharyngeal grooves (or clefts) form from the lateral ectodermal surface of the neck region to separate the arches. The pouches line up with the clefts, and these thin segments become gills in fish.

The pouches

First pouch

This is the only pouch in which the endoderm and ectoderm remain close together, as the tympanic membrane. There is minimal mesoderm in the tympanic membrane.

Second pouch

Third pouch

  • The third pouch possesses Dorsal and Ventral wings. Derivatives of Dorsal include the inferior parathyroid glands, while the ventral wings fuse to form the cytoreticular cells of the thymus. The main nerve supply to the derivatives of this pouch is Cranial Nerve IX, glossopharyngeal nerve.

Fourth pouch

Fifth pouch

  • Rudimentary structure, becomes part of the fourth pouch contributing to thyroid C-cells.

See also

External links

Template:Embryology


Template:WS Template:Jb1