2009 Lecture 11

From Embryology

Head Development

Pharyngeal arch structure cartoon.gifStage13 pharyngeal arch excerpts.gif

Introduction

The head and neck structures are derived from pharyngeal arches 1 - 6 with the face forming from arch 1 and 2 and the frontonasal prominence.

Each arch contains similar Arch components derived from endoderm, mesoderm, neural crest and ectoderm. These components though will form different structures depending on their arch origin.

Lecture Objectives

Textbook References

Pharyngeal arch cartilages.jpg
  • The Developing Human: Clinically Oriented Embryology (8th Edition) by Keith L. Moore and T.V.N Persaud - Moore & Persaud Chapter Chapter 10 The Pharyngeal Apparatus pp201 - 240.
  • Larsen’s Human Embryology by GC. Schoenwolf, SB. Bleyl, PR. Brauer and PH. Francis-West - Chapter 12 Development of the Head, the Neck, the Eyes, and the Ears pp349 - 418.

The Pharynx

Head arches cartoon.jpg Stage13 B2 excerpt.gif Pharynx cartoon.jpg

The cavity within the pharyngeal arches forms the pharynx.

The pharynx contributes to 2 endocrine organs, in the roof the [endocrine7.htm pituitary] (hypophysis) and the floor the thyroid. The thyroid gland being one of the first endocrine organs to be formed has an important role in embryonic development. The pharynx floor of all arches also contribute to the formation of the [head6.htm tongue].

Abnormalities

FASface.jpg

References

Textbooks

  • The Developing Human: Clinically Oriented Embryology (8th Edition) by Keith L. Moore and T.V.N Persaud - Moore & Persaud Chapter Chapter 10 The Pharyngeal Apparatus pp201 - 240.
  • Larsen’s Human Embryology by GC. Schoenwolf, SB. Bleyl, PR. Brauer and PH. Francis-West - Chapter 12 Development of the Head, the Neck, the Eyes, and the Ears pp349 - 418.

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Cite this page: Hill, M.A. (2026, November 1) Embryology 2009 Lecture 11. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/2009_Lecture_11

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© Dr Mark Hill 2026, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G