Revision as of 21:38, 24 September 2009

Sensory Development - Hearing

Introduction

We use the sense of balance and hearing to position ourselves in space, sense our surrounding environment, and to communicate. Portions of the ear appear very early in development as specialized region (otic placode) on the embryo surface that sinks into the mesenchyme to form a vesicle (otic vesicle = otocyst) that form the inner ear.

This region connects centrally to the nervous system and peripherally through specialized bones to the external ear (auricle). This organisation develops different sources forming the 3 ear parts: inner ear (otic placode, otocyst), middle ear (1st pharyngeal pouch and 1st and 2nd arch mesenchyme), and outer ear (1st pharyngeal cleft and 6 surface hillocks).

This complex origin, organisation, and timecourse means that abnormal development of any one system can impact upon the development of hearing.

Textbooks

Human Embryology (2nd ed.) Larson Chapter 12: p375-409
The Developing Human: Clinically Oriented Embryology (6th ed.) Moore and Persaud Chapter 19: p491-511

Essentials of Human Embryology Larson Chapter 12: p252-272
Before We Are Born (5th ed.) Moore and Persaud Chapter 20: p460-479

Objectives

Understanding of structures and functions of the auditory pathway
Understanding of inner, middle and external ear origins
Understanding of timecourse of auditory development
Understanding of abnormalities of auditory development
Brief understanding of central auditory pathway and molecular development

Glossary Links

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Course Content 2009

Cite this page: Hill, M.A. (2024, May 18) Embryology 2009 Lecture 17. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/2009_Lecture_17

What Links Here?

@@ Line 14: / Line 14: @@
 * Essentials of Human Embryology Larson Chapter 12: p252-272
 * Before We Are Born (5th ed.) Moore and Persaud Chapter 20: p460-479
+==Objectives==
+* Understanding of structures and functions of the auditory pathway
+* Understanding of inner, middle and external ear origins
+* Understanding of timecourse of auditory development
+* Understanding of abnormalities of auditory development
+* Brief understanding of central auditory pathway and molecular development
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 [[Category:2009ANAT2341]][[Category:Science-Undergraduate]]

2009 Lecture 17: Difference between revisions