About This Chapter
Muscles of the Mouth - Chapter Summary
This chapter contains lessons that outline the muscles of the mouth, including the tensor tympani muscle and the depressor anguli oris muscle. You'll learn the definition, origin and function of the muscles of the mouth, including the mentalis muscle. If you've had a hard time understanding these topics, our self-paced and mobile-friendly lessons can help. Feel free to study 24 hours a day to review all you need to know. Our instructors are available to answer any questions you might have. Once this chapter is complete, you should be able to:
- Highlight the function of and nerve associated with the buccinator muscle
- Detail the definition and insertion of the orbicularis oris muscle
- Explain what the risorius muscle does
- Define the masseter muscle and recognize its origin
- Discuss the function of and action related to the temporalis muscle
- Identify the trigger point and discuss insertion as it relates to the lateral pterygoid muscle
- Describe the function of the medial pterygoid muscle
1. Tensor Tympani Muscle: Definition, Function & Nerve
The tensor tympani muscle is a small muscle located in the middler ear. In this lesson, learn about the definition, function, and nerve of the tensor tympani muscle.
2. Depressor Anguli Oris Muscle: Function, Origin & Insertion
The depressor anguli oris muscle can be thought of as a very ''unhappy''' muscle. Be sure to read this lesson to find out why this muscle is an ''unhappy'' muscle!
3. Mentalis Muscle: Innervation, Origin & Insertion
The mentalis muscle is a muscle located in the chin and lower lip area of the face. In this lesson, learn about the innervation, origin, and insertion of the mentalis muscle.
4. Mentalis Muscle: Definition, Function & Location
The mentalis muscle is a muscle located between the tip of the chin and the lower lip. In this lesson, learn about the definition, function, and location of the mentalis muscle.
5. Buccinator Muscle: Function, Origin & Insertion
The buccinator muscle is a muscle located in each cheek of the face. In this lesson, learn about the origin, insertion, and function of the buccinator muscle.
6. Buccinator Muscle: Definition & Nerve
What is one of the first muscles that humans are able to control? If you said the buccinator, you are right! In this lesson, learn all about the buccinator muscle, including its definition and innervation.
7. Orbicularis Oris: Definition, Innervation & Function
The orbicularis oris is the muscle that surrounds the mouth and forms the lips. In this lesson, learn the definition, innervation, and function of the orbicularis oris muscle.
8. Orbicularis Oris: Action, Origin & Insertion
The orbicularis oris is a facial muscle that allows you to perform several different actions with your mouth. To learn all about this amazing muscle, be sure to check out this lesson!
9. What Does the Risorius Muscle Do? - Definition & Function
This lesson goes over a little known muscle called risorius. Find out where it's found, what it helps us do on a daily basis, and a little bit more about its anatomy in this lesson.
10. Masseter Muscle: Definition, Innervation & Function
The masseter muscle is a facial muscle located in the cheek area. In this lesson, learn about the definition, innervation, and function of the masseter muscle.
11. Masseter Muscle: Action, Origin & Insertion
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.
12. Temporalis Muscle: Definition & Function
The temporalis muscle is a muscle of the skull located at the side of the head/face near the temples. In this lesson, learn about the definition and function of the temporalis muscle.
13. Temporalis Muscle: Action, Innervation & Origin
The temporalis muscle is a muscle that is located at the side of the head/skull at each of the temples. In this lesson, learn about the action, innervation, and origin of the temporalis muscle.
14. Lateral Pterygoid Muscle: Trigger Point & Innervation
The lateral pterygoid muscle is one of the muscles of mastication that can often become painful, tender, and stiff. Review this lesson to learn how and why the lateral pterygoid commonly gets these symptoms!
15. Lateral Pterygoid Muscle: Function, Origin & Insertion
Do you like to eat? If you said 'YES' then be sure to check out this lesson on the lateral pterygoid muscle, which is one of the muscles of the skull that allows you to eat your favorite foods.
16. Medial Pterygoid Muscle: Function & Nerve
The medial pterygoid muscle is a muscle associated with the inner part of the jaw. In this lesson, learn about the functions and the nerve associated with the medial pterygoid muscle.
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Other chapters within the Muscles of the Body for Health Professionals course
- Muscles of the Head
- Muscles of the Tongue
- Muscles of the Neck
- Muscles of the Shoulder
- Muscle Dysfunction in the Head, Neck & Shoulders
- Muscles of the Chest
- Muscles of the Abdomen
- Iliac Region Muscles
- Muscles of the Upper Arm
- Muscles of the Forearm
- Muscles of the Hand
- Muscles of the Back
- Muscles of the Pelvis
- Gluteal Muscles
- Muscles of the Thigh
- Muscles of the Leg
- Muscles of the Foot
- Tendonitis & Muscle Tears