Chris Jarmey - The Pocket Atlas of Human Anatomy: A Reference for Students of Physical Therapy, Medicine, Sports, and Bodywork

The Pocket Atlas

of Human Anatomy

A Reference for Students of

Physical Therapy, Medicine,

Sports, and Bodywork

Revised Edition

Chris Jarmey

Copyright 2018, 2022 by Chris Jarmey. All rights reserved. No portion of this book, except for brief review, may be reproduced, stored in a retrieval system, or transmitted in any form or by any meanselectronic, mechanical, photocopying, recording, or otherwisewithout the written permission of the publisher. For information, contact Lotus Publishing or North Atlantic Books.

First published in 2018. This revised edition has been updated with corrections in 2022 by

Lotus Publishing

Apple Tree Cottage, Inlands Road, Nutbourne, Chichester, PO18 8RJ and

North Atlantic Books

Berkeley, California

All Drawings Amanda Williams

Cover Design Chris Fulcher

Text Design Medlar Publishing Solutions Pvt Ltd., India

Printed and Bound in India by Replika Press

The Pocket Atlas of Human Anatomy: A Reference for Students of Physical Therapy, Medicine, Sports, and Bodywork, Revised Edition , is sponsored and published by North Atlantic Books, an educational nonprofit based in Berkeley, California, that collaborates with partners to develop cross-cultural perspectives, nurture holistic views of art, science, the humanities, and healing, and seed personal and global transformation by publishing work on the relationship of body, spirit, and nature.

North Atlantic Books publications are distributed to the US trade and internationally by Penguin Random House Publishers Services. For further information, visit our website at www.northatlanticbooks.com.

British Library Cataloguing-in-Publication Data

A CIP record for this book is available from the British Library

ISBN 978 1 913088 31 6 (Lotus Publishing)

ISBN 978 1 62317 734 8 (North Atlantic Books)

ISBN 978 1 62317 735 5 (E-Book)

The Library of Congress Cataloguing-in-Publication Data

Name: Jarmey, Chris, author.

Title: The pocket atlas of human anatomy : A Reference for Students of Physical Therapy, Medicine, Sports, and Bodywork/ Chris Jarmey.

Description: Revised edition. | Berkeley : North Atlantic Books, 2022. | Summary: Revised and updated: a user-friendly illustrated guide to human anatomy, written for students and practitioners--Provided by publisher.

Identifiers: LCCN 2021039177 (print) | LCCN 2021039178 (ebook) | ISBN 9781623177348 (paperback) | ISBN 9781623177355 (epub)

Subjects: LCSH: Human anatomy--Atlases.

Classification: LCC QM23 .J35 2022 (print) | LCC QM23 (ebook) | DDC 611--dc23

LC record available at https://lccn.loc.gov/2021039177

LC ebook record available at https://lccn.loc.gov/2021039178

Contents

Foreword

Between 1988, when Chris married my sister and 2008, the year of his untimely death, I had the good fortune to benefit from Chris depth of knowledge on matters pertaining to the health of the human body. As a physiotherapist and shiatsu practitioner, his understanding of anatomy and physiology was extensive. In addition, Chris skills as a teacher of shiatsu, yoga and meditation were widely respected, in particular his ability to explain complex concepts in simple, practical terms.

As a practicing GP I was delighted when Chris began to write books that encompassed the wide scope of his expertise. The Concise Book of the Moving Body , along with its companion The Concise Book of Muscles , sits on the shelf in my GP surgery. It is especially helpful as an aide-mmoire when I need a quick revision of anatomy. The clear, concise language and accompanying illustrations are easy to access and take the reader straight to the point. On occasion, I have found it useful in explaining symptoms to my patients, who are grateful for explanations that help demystify their ill health.

Im delighted that The Concise Book of the Moving Body has now been repackaged and rebadged as The Pocket Atlas of Human Anatomy , and I am confident that it will serve as an excellent text for all students of anatomy and bodywork, whether in the field of medicine, sport or rehabilitation. I have no hesitation in recommending Chris textbook and will continue to appreciate the valuable contribution he has made. My hope is that this book will enhance your understanding of the human body and will become a trusted companion on your journey of discovery.

Dr. David Simpson, 2022

A Note About Peripheral Nerve Supply

The peripheral nervous system (PNS) comprises all the neural structures outside the brain and spinal cord, which constitute the central nervous system (CNS) . The PNS has two main components: the somatic nervous system and the autonomic nervous system ; the latter deals with involuntary control of smooth muscle and glands. As this book is concerned with skeletal muscles, it is only the somatic nervous system that is of interest.

The PNS consists of 12 pairs of cranial nerves and 31 pairs of spinal nerves, along with their subsequent branches. The spinal nerves are numbered according to the level of the spinal cord from which they arise, known as the spinal segment . Along with dermatomes, sensory nerve supply is detailed in .

In from which the nerve fibers arise often varies between different sources. This is because spinal nerves are organized into networks known as plexuses (plexus = a network of nerves: from Latin plectere = to braid), which supply different regions of the body, and nerve fibers from different spinal segments will contribute to the individual named nerve that supplies a particular muscle.

For each muscle in , the spinal levels that typically contribute to its named nerve are indicated. The relevant spinal segments are represented by C for cervical, T for thoracic, L for lumbar, and S for sacral, followed by a number representing the level.

A spinal segment, showing the nerve roots combining to form a spinal nerve, which then divides into ventral and dorsal rami.

A spinal segment is the part of the spinal cord that gives rise to each pair of spinal nerves, one for each side of the body. Each spinal nerve contains sensory and motor fibers from the dorsal and ventral roots respectively. Soon after the spinal nerve exits through the foramen or opening between adjacent vertebrae, it divides into a dorsal primary ramus, which is directed posteriorly, and a ventral primary ramus, which is directed anteriorly and laterally. Fibers from the dorsal rami innervate the skin and extensor muscles of the neck and trunk. The ventral rami supply the limbs, as well as the sides and front of the trunk.

chapter 1

Anatomical Terms

Positions

To describe the relative positions of body parts and their movements, it is essential to have a universally accepted initial reference position. This is known as the anatomical position , which is simply the upright standing position, with feet flat on the floor, arms hanging by the sides and the palms facing forward (see ). The directional terminology used always refers to the body as if it were in the anatomical position, regardless of its actual position. Note also that the terms left and right refer to the sides of the object or person being viewed, and not those of the reader.