UNSW Embryology

Development of the organs of Vision, Audition, Equilibrium and Olfaction
Abnormal Development

© Dr Mark Hill (2008)

Acknowledgements

Introduction

Due to the complex nature and development of sensory organs many different genetic and environmental (maternal) effects can impact upon the development of these structures.

Page Links: Introduction | Abnormalities | Australian Statistics 1981-1992 | Hearing Statistics (Australia) | Eye | Ear | Nose | Taste | Self Assessment Questions | OMIM Database | Next Page

Australian Statistics 1981-1992

Hearing Statistics (Australia)

• Population with Hearing Loss 1,800,000 (10%), 1996
• Deaf Populaton About 16,000 (1989)
• see also WWW Hearing Links - NSW

Eye

OMIM List of Entries (1999, uppercase entry is a specific record)

• aniridia
• aphakia
• coloboma
• COLOBOMA, OCULAR
• COLOBOMA OF OPTIC NERVE
• congenital cataracts
• congenital glaucoma
  • GLAUCOMA 3, PRIMARY INFANTILE, A
  • GLAUCOMA 3, PRIMARY INFANTILE, B
• congenital cholesteatoma
• congenital ptosis eyelid
• cryptophthalmos
• Holoprosencephaly
  • SONIC HEDGEHOG
  • HOLOPROSENCEPHALY 1
  • HOLOPROSENCEPHALY 2
  • HOLOPROSENCEPHALY 3
  • PSEUDOTRISOMY 13 SYNDROME
• microphthalmos

Ear

OMIM List of Entries (1999, uppercase entry is a specific record)

• atresia external auditory meatus
• congenital deafness
• microtia
• MICROTIA-ANOTIA
• preauricular sinus

Nose

OMIM List of Entries (1999, uppercase entry is a specific record)

• smell

Taste

OMIM Database

OMIM Database Online Mendelian Inheritence in Man Database. OMIM(database is an external link)

Internet Search OMIM database with the keyword senses or the above abnormality names.

List of the search results for "senses (1999)" is available for these computers.

Self Assessment Questions

1. Using simple sketches describe the development of the spinal cord, the dorsal root ganglia and spinal nerves.

2. Construct and label simple diagrams showing the early development of the C.N.S. Define the following terms :

Term	Definition
Neural plate
Neural groove
Neural folds
Neural crest
Neuropores
Primary and secondary brain vesicles

3. Illustrate the development of the pituitary.

4. Prepare labelled diagrams of the early development of eyes. Define the following terms:

Term	Definition
Optic grooves
Optic vesicles
Optic stalks
Optic fissures
Optic cups
Lens placodes

5. Briefly describe the development of the retina.

6. Briefly describe the development of the Inner, Middle and External Ears. Define the terms:

Term	Definition
Otic placode
Otic pit
Otic vesicle (otocyst)
Endolymphatic duct and sac
Semicircular ducts

7. What elements of the C.N.S. and peripheral nervous system are derived from the neural crest?

Glossary of Terms

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Quick Links

Development Notes ----------------- Menstrual Cycle Week 1 Week 2 Week 3 Week 4 Placenta Serial Images Genes/DNA Molecular Dev Abnormal Dev Postnatal Dev Notes Index

System Notes ----------------- Heart/Cardiovascular Respiratory Coelomic cavity Gastrointestinal Tract Head and Neck Neural Neural Crest Eye Ear Nose Endocrine Urogenital Musculoskeletal Integumentary

Movies ----------------- Embryo Growth Ultrasound Week 1 Week 2 Week 3 Week 4 Stage 13/14 Stage 22 Neural Head and Neck Heart Vasculature Gastrointestinal Urogenital Other Embryos Larsen Internet

Other Embryos ----------------- Chicken Fly Frog Mouse Rabbit Rat Worm Zebrafish Guinea Pig

UNSW Embryology ISBN: 978 0 7334 2609 4

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