Organ Systems Involved With Performing Or Assisting With...

There are several organ systems involved with performing or assisting with the action of typing. The integumentary system acts as a barrier to protect the fingers from harm or pathogenic agents from the keyboard. Thick skin, such as the skin of palms, has five skin layers including the stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, and stratum corneum, in order to protect the fingers from wear and tear. The integumentary system also provides protection with chemical barriers such as the acid mantle, which retards bacterial growth; human defensin, which kills bacteria; and cathelicidins, which prevent infections. Biological barriers in the epidermis such as Langerhans cells, tissue macrophages that act as antigen presenting cells, are also present. The integumentary system is also responsible for cutaneous sensation by sending signals received from Merkel cells in the epidermis and Meissner’s corpuscles in the dermis to the brain via nerves. The nervous system is in charge of carrying signals from the fingers to the brain, processing information, and sending signals back from the brain to the fingers. The nervous system’s afferent nerves carry signals from the peripheral nervous system to the central nervous system, neural integration is carried out by interneurons, and efferent neurons send signals back from the central nervous system to the peripheral nervous system. Neurons conduct messages in the form of nerve impulses. They have dendrites toShow MoreRelatedFundamentals of Hrm263904 Words   |  1056 PagesCourier/Kendallville. The cover was printed by Courier/Kendallville. This book is printed on acid free paper. Copyright  © 2010, 2007, 2005, 2002 John Wiley Sons, Inc. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except as permitted under Sections 107 or 108 of the 1976 United States Copyright Act, without either the prior written permission