Copyright

Masseter Muscle: Action, Origin & Insertion

An error occurred trying to load this video.

Try refreshing the page, or contact customer support.

Coming up next: Temporalis Muscle: Definition & Function

You're on a roll. Keep up the good work!

Take Quiz Watch Next Lesson
 Replay
Your next lesson will play in 10 seconds
  • 0:04 Masseter Muscle
  • 0:51 Action
  • 1:11 Origin
  • 1:32 Insertion
  • 2:02 Lesson Summary
Add to Add to Add to

Want to watch this again later?

Log in or sign up to add this lesson to a Custom Course.

Log in or Sign up

Timeline
Autoplay
Autoplay
Speed
Lesson Transcript
Instructor: Dan Washmuth

Dan has taught college Nutrition, Anatomy, Physiology, and Sports Nutrition courses and has a master's degree in Dietetics & Nutrition.

The masseter muscle is a facial muscle that is located in the area of the cheek. In this lesson, you'll learn about the action, origin, and insertion of the masseter muscle.

Masseter Muscle

Jimmy is a 43-year-old construction worker who loves to chew gum. Over the past 20+ years, he has chewed about ten pieces of gum each day. Some of his friends say that Jimmy is addicted to chewing gum.

The muscles in the jaws, just like any other muscle in the body, get bigger when they're exercised repeatedly over a period of time. Therefore, Jimmy's constant gum chewing over the years has made his jaw muscles much bigger and more pronounced, especially the masseter muscle.

The masseter muscle is a facial muscle that is located in the area of the cheek, and it is involved in chewing. If you put your fingers on the back part of your cheek and bite down, the muscle that flexes outward when you bite down is the masseter muscle.

Action

As it was just mentioned, the masseter is involved in chewing. Specifically, the action of this muscle involves pulling the lower jaw up, which causes the jaws to close. Therefore, the masseter muscle is involved in the biting portion of chewing. The word 'mastication' means 'to chew,' and this word 'mastication' comes from the word 'masseter.'

Origin

The origin of a muscle refers to the location of the body where the muscle starts or begins. The origin of the masseter muscle is the zygomatic arch. The zygomatic arch, also called the cheek bone or zygomatic process, is a bony arch that connects the temporal and zygomatic bones, which are located on the sides of the face/skull.

To unlock this lesson you must be a Study.com Member.
Create your account

Register to view this lesson

Are you a student or a teacher?

Unlock Your Education

See for yourself why 30 million people use Study.com

Become a Study.com member and start learning now.
Become a Member  Back
What teachers are saying about Study.com
Try it risk-free for 30 days

Earning College Credit

Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Transferring credit to the school of your choice

Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.

Create an account to start this course today
Try it risk-free for 30 days!
Create an account
Support