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Ch 4: Muscles of the Neck

About This Chapter

If you're struggling to understand the muscles of the neck, check out the self-paced lessons provided in this engaging chapter. Each lesson is short, easy to follow and written by a professional instructor to help you study for an exam or finish a challenging assignment.

Muscles of the Neck - Chapter Summary

Our instructors present the muscles of the neck in this informative chapter for your study. Topics covered here include the function and innervation of the platysma muscle and the trigger points, definition and action of the sternocleidomastoid muscle. You can tackle even the most complex of subjects with these lessons, which are written by instructors to make the muscles of the neck easy to understand. Each lesson is followed by a short quiz that works well as a test prep exercise. Feel free to reach out to an instructor if you have any questions along the way. After completing this chapter, you should be able to:

  • Outline the symptoms and treatment for sternocleidomastoid syndrome
  • Discuss the origin and function of the digastric muscle
  • Detail the function of the omohyoid muscle and the symptoms of omohyoid syndrome
  • Explain the insertion of the longus colli muscle
  • Describe the causes and symptoms of thoracic outlet syndrome
  • Identify the function of the scalene muscles
  • Detail the action and innervation of the levator scapulae muscles
  • Explain what causes levator scapulae syndrome
  • Differentiate between the inferior and superior obliquus capitis muscles
  • Discuss the origin and definition of the semispinalis capitis muscles
  • Outline the symptoms and treatment of splenius capitis syndrome
  • Provide a definition for the splenius capitis muscle

16 Lessons in Chapter 4: Muscles of the Neck
Test your knowledge with a 30-question chapter practice test
What is the Platysma Muscle? - Definition & Function

1. What is the Platysma Muscle? - Definition & Function

The platysma muscle is a muscle located in the chest, neck, cheek, and mouth areas of the body. In this lesson, learn about the definition and function of the platysma muscle.

Platysma Muscle: Action, Origin & Innervation

2. Platysma Muscle: Action, Origin & Innervation

The platysma muscle is a muscle that runs from the upper chest and shoulders, up through the neck, and attaches to various parts of the lower face. In this lesson, learn about the action, origin, and innervation of the platysma muscle.

Sternocleidomastoid Muscle: Origin, Insertion & Action

3. Sternocleidomastoid Muscle: Origin, Insertion & Action

The sternocleidomastoid muscle has a role in the body as big as its name. Here we will discuss its location in the body (origin and insertion) as well as its action (the movement it makes).

Sternocleidomastoid: Nerve Supply & Trigger Points

4. Sternocleidomastoid: Nerve Supply & Trigger Points

The sternocleidomastoid muscle is a large muscle located on each side of the neck that can be easily palpated, or felt, with your fingers. This lesson will provide great information about the nerve supply and trigger points of this important muscle.

What is the Sternocleidomastoid? - Definition & Function

5. What is the Sternocleidomastoid? - Definition & Function

The sternocleidomastoid is located on each side of the neck and it is one of the largest muscles of the neck. In this lesson, learn about the definition and function of the sternocleidomastoid muscle.

Digastric Muscle: Action, Origin & Insertion

6. Digastric Muscle: Action, Origin & Insertion

The digastric muscle is a small muscle located in the neck, beneath the lower jaw. In this lesson, learn about the origin, insertion, and action of the digastric muscle.

Digastric Muscle: Definition, Function & Innervation

7. Digastric Muscle: Definition, Function & Innervation

The digastric muscle is a small muscle located in the neck, just below the lower jaw. In this lesson, learn about the definition, function, and innervation of the digastric muscle.

Omohyoid Muscle: Function, Origin & Innervation

8. Omohyoid Muscle: Function, Origin & Innervation

The omohyoid muscle is a thin, relatively long muscle located in each side of the neck. In this lesson, learn about the origin, innervation, and function of the omohyoid muscle.

Longus Colli Muscle: Action, Origin & Insertion

9. Longus Colli Muscle: Action, Origin & Insertion

The longus colli muscle is a muscle found on both sides of the vertebral column in the neck and upper chest. Are you ready to learn about the action, origin, and insertion of this muscle? Let's get started!

Scalene Muscles: Function, Innervation & Action

10. Scalene Muscles: Function, Innervation & Action

The scalene muscles are a group of muscles located at each side of the neck. In this lesson, learn about the function, action, and innervation of the scalene muscles.

Levator Scapulae: Origin, Insertion & Action

11. Levator Scapulae: Origin, Insertion & Action

Do you know much about the origin, insertion, and action of the levator scapulae, a muscle that is located on the back sides of the neck? If not, you should definitely read this lesson!

Levator Scapulae: Definition, Function & Innervation

12. Levator Scapulae: Definition, Function & Innervation

Most people use the levator scapulae muscle each time they say ''I don't know''. Learn how and why, and what this muscle is, along with its major functions and innervation!

Obliquus Capitis Muscles: Inferior & Superior

13. Obliquus Capitis Muscles: Inferior & Superior

The obliquus capitis muscles are a group of muscles of the lower skull and upper neck. Don't miss out on the opportunity to learn about these important muscles, including their origin, insertion, and action.

Semispinalis Capitis: Action, Origin & Insertion

14. Semispinalis Capitis: Action, Origin & Insertion

Have you ever looked up at the sky to see a bird or plane fly by? If so, you should thank your semispinalis capitis, a muscle located in the back of your neck. This lesson teaches you all about this muscle, including its origin, insertion, and action.

Semispinalis Capitis: Definition, Function & Innervation

15. Semispinalis Capitis: Definition, Function & Innervation

Do you want to become a whiz about the definition, function, and innervation of the semispinalis capitis muscle? An easy way to become a whiz about this muscle is to simply read the rest of this lesson!

Splenius Capitis Muscle: Definition, Origin & Action

16. Splenius Capitis Muscle: Definition, Origin & Action

Do you know much about the splenius capitis muscle, a muscle located in the back of the neck? If not, then you should just sit back, relax, and get ready to learn all about this amazing muscle!

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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