UNSW Embryology

DEVELOPMENT OF THE ENDOCRINE SYSTEM
Embryology Home Page

Page 1 | 2 | 3 | 4 | 5 |WWW

Page LinksIntroductionReading Computer Activities ObjectivesLearning activities Endocrine System OverviewTermsReferencesAbout Notes

Page 2 | Abnormalities | OMIM | Questions | Medline
Page 3 | Pig Stage 13/14
Page 4 | Human (Stage22) | Selected Human highpower
Text only page | WWW Links

Introduction

Reading

  • Human Embryology (2nd ed.) Larson
  • The Developing Human: Clinically Oriented Embryology (6th ed.) Moore and Persaud Ch10: p230-233, Ch12: p280-282, Ch13: p319-347
  • Before We Are Born (5th ed.) Moore and Persaud Ch
  • Essentials of Human Embryology Larson Ch
  • Human Embryology Fitzgerald and Fitzgerald Ch24: p166-167
  • Additional References
  • Search PubMed- Medline

Computer Activities

UNSW Embryology:
  • Listed sections: Pig, Human
  • Pig Systems
  • Human Systems

Embryo Images Unit:

Objectives

  • Understand the main steps in the development of the thyroid, parathyroid, adrenal, pituitary and pineal glands.

Learning activities

  • Examine the developing thyroid, adrenal and pituitary glands in the human and pig embryos.
  • Review the vascular and nerve supply of the above glands.
  • Review the development of the parathyroid and pineal glands.

Endocrine System Overview

Parathyroid and Thymus

  • Endoderm of 3,4,5 pharyngeal pouches form dorsal and ventral cell masses.
  • Dorsal 3rd and 4th pouch form parathyroid.
  • Ventral cells move medially to form thymus.

The ectoderm endoderm boundary in the pharynx forms 2 glands.

Thyroid

  • The boundary endoderm in the floor region forms a pocket that separates from the surface and forms the thyroid.

Pituitary Gland

  • The boundary epitheilal ectoderm in the roof of the pharynx forms a pocket (Rathke's pouch) that comes into contact with the ectoderm of developing brain.
  • The anterior pituitary originates from the epitheilal ectoderm.
  • The posterior pituitary originates from the brain ectoderm.

 Adrenal Gland

  • Neural crest cells migrate toward the coelomic cavity wall and form the adrenal medulla.
  • Overlying cells proliferate and form a capsule that will form the adrenal cortex.

References

About Notes

  • Lecture notes from the Anat 3311 1997 Science Embryology course compiled and written by Dr Mark Hill. Some notes derived from historic class notes.
  • Note Links to OMIM Entries are copies of originals for computers without internet access. Computers with internet access can directly access the database.

Links
Serial Sections Homepage
Human Homepage
Pig Homepage

m.hill@unsw.edu.au
Date Last Modified: 11/3/99
This site maintained by Dr M. Hill