...Ectodermal dysplasia is not categorized as a single disorder, but a group of disorders that are all closely related. Ectodermal dysplasias are genetic disorders that affect the tissues derived from the embryonic ectoderm. These include the skin and its appendage (hair follicles, eccrine glands, sebaceous glands, nails) and teeth. Depending on the disorder, ectodermal dysplasias can also affect the ears, nerves, fingers and toes. Dr. P. Thurman was the first doctor to describe a patient suffering from ectodermal dysplasia in 1848, but the term was not coined until 1929 by a doctor named Weech. Now, in 2015, there are over 192 disorders that have been identified, with symptoms that can range from mild to serve. These disorders, being genetic, can be inherited in five ways; (1) spontaneous mutations (2) autosomal dominant (3) autosomal recessive (4) X-linked dominant (5) X-linked recessive. Also, with the variety of inheritance, not all individuals affected with Ectodermal dysplasias will have physical abnormalities that fit the description of the typical disorder. The X-linked recessive form of...
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...Acquisitions Editor: Crystal Taylor Product Managers: Kelley A. Squazzo & Catherine A. Noonan Designer: Doug Smock Compositor: SPi Technologies First Edition © 2011 Lippincott Williams & Wilkins, a Wolters Kluwer business. 351 West Camden Street Baltimore, MD 21201 Printed in China All rights reserved. This book is protected by copyright. No part of this book may be reproduced or transmitted in any form or by any means, including as photocopies or scanned-in or other electronic copies, or utilized by any information storage and retrieval system without written permission from the copyright owner, except for brief quotations embodied in critical articles and reviews. Materials appearing in this book prepared by individuals as part of their official duties as U.S. government employees are not covered by the abovementioned copyright. To request permission, please contact Lippincott Williams & Wilkins at Two Commerce Square, 2001 Market street, Philadelphia, PA 19103 USA, via email at permissions@lww.com, or via website at lww.com (products and services). Library of Congress Cataloging-in-Publication Data Lambert, Harold Wayne, 1972– Lippincott’s illustrated Q&A review of anatomy and embryology / H. Wayne Lambert, Lawrence E. Wineski ; with special contributions from Jeffery P. Hogg, Pat Abramson, Bruce Palmer. — 1st ed. p. ; cm. Includes index. ISBN 978-1-60547-315-4 1. Human anatomy—Examinations, questions, etc. I. Wineski, Lawrence E. II. Title. [DNLM: 1. Anatomy—Examination Questions...
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