Human Anatomy (9th Edition)
Human Anatomy (9th Edition)
9th Edition
ISBN: 9780134320762
Author: Frederic H. Martini, Robert B. Tallitsch, Judi L. Nath
Publisher: PEARSON
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Chapter 10, Problem 1RFT

Match each numbered item with the most closely related lettered item.

spinalis.................................................

Expert Solution & Answer
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Summary Introduction

To review:

Match the term spinalis with the most closely related description given below:

Compresses cheeks

Elevates larynx

Tenses skin of neck

Pelvic floor/ associated structures

Elevates mandible

Move ribs

Retracts tongue

Extends neck

Eye muscles

Makes eye look down

Introduction:

Spinalis is a portion of erector spinae, it is a group of muscles present in the intermediate layer of the back muscles. There are two muscles in this group, namely spinalis cervicis and spinalis thoracis.

Explanation of Solution

Spinalis muscles are linked to the vertebral column’s spinous processes. Of these two, spinalis cervicis originates from the cervical C7 to T2 spinous process and inserts at spinous processes of the axis and the cervical C3-C4. The primary action of this muscle is to extend the neck.

Conclusion

Therefore, it can be concluded that the term spinalis can be correctly matched with option (h) extends neck.

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