Explanation Explanation for the correct answer: Option (d) is given that the cervical enlargement of the spinal cord supplies nerves to the pectoral girdle and upper limbs. The cervical enlargement consists of interneurons that supply to the upper limbs and the pectoral girdle. Hence, option (d) is correct. Explanation for incorrect answers: Option (a) is given that the conus medullaris of the spinal cord supplies nerves to the pectoral girdle and upper limbs. The cone-shaped and tapering end of the spinal cord is known as the conus medullaris and it does not supply to the pectoral girdle...

9th Edition

ISBN: 9780134320762

Author: Frederic H. Martini, Robert B. Tallitsch, Judi L. Nath

Publisher: PEARSON

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Question

Chapter 14, Problem 15RFT

Summary Introduction

Introduction:

The pectoral girdle is also known as the shoulder girdle. It is composed of two bones, namely the clavicle and the scapula. It is innervated by the brachial plexus, which begins from the C5-T1 of the spinal nerves. These nerves further form the inferior trunk, superior trunk, and middle trunk.

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Chapter 14, Problem 14RFT

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Chapter 14 Solutions

Human Anatomy (9th Edition)

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The pectoral girdle is also known as the shoulder girdle. It is composed of two bones, namely the clavicle and the scapula. It is innervated by the brachial plexus, which begins from the C5-T1 of the spinal nerves. These nerves further form the inferior trunk, superior trunk, and middle trunk.

Solution Summary: The author explains that the cervical enlargement of the spinal cord supplies nerves to the pectoral girdle and upper limbs.

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