Muscle: Principle Group: Innervation: Origin: Insertion: Action: Description / Clinical / Relationships: Stapedius : Ear, Middle ear: Facial N. (VII) Near the Eustachian Tube: Stapes of middle ear: Reflexively contracts with a loud sound, to protect middle and inner ear: Tensor Tympani: Ear, … The facial muscles (also known as the muscles of facial expression or mimetic muscles) enable facial expression and serve as sphincters and dilators of the orifices of the face.These muscles differ from those of other regions in the body as there is no fascia deep to the skin of the face; many of the facial muscles insert directly into the skin 1.

These muscles originate from bone or fascia and insert on skin to provide the movements of facial expression. This is a tutorial on the muscles of the face, so the muscles responsible for facial expression. These muscles are innervated by the seventh cranial nerve, the facial nerve. The facial muscles (or muscles of facial expression) are situated within the subcutaneous tissue and are responsible for the movements of skin folds, providing different facial expressions.The facial muscles originate from the bones of the facial skeleton (viscerocranium) and insert into the skin.. The muscles of facial expression are enclosed by, or form part of, the superficial musculo-aponeurotic system (SMAS).

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Start studying Muscles of Facial Expression (Actions & Innervation). The facial muscles arise from the second pharyngeal arch and are innervated by branches of the facial nerve, with the exception of levator palpebrae superiors, which can be functionally considered as a muscle of facial expression, even though it is innervated … Origin: Medial end of the superciliary arch Insertion:Skin of the medial half of eyebrow Innervation: Facial nerve [VII] Function:this muscle is deep to the eyebrows and the orbicularis oculi muscle and is active during frowning, drawing the eyebrows toward the midline so there are vertical wrinkles above the nose (think of the corrugations in a cardboard box to help you remember this). Most of the facial nerve is comprised of motor innervation of the muscles of facial expression. The muscles of facial expression are derivatives of the 2nd pharyngeal arch and are innervated by facial nerve (CN VII)[1]. The muscles of facial expression are located in the subcutaneous layer on the scalp, face, and neck: Occipitofrontalis: This muscle has two bellies (the thickest part of the muscle): The frontal belly originates from the epicranial aponeurosis (fibrous tendon) and inserts into the skin and subcutaneous tissues of the eyebrows and forehead. Download a copy of this study guide. When you’re testing a person’s cranial nerves and you get to cranial nerve no. Now we will return to the topic of conversation first introduced in our discussion of the facial nerve: the facial muscles that it innervates, which allow for us to nonverbally communicate with others via our facial expressions. The Facial Muscles: The muscles of the face serve two primary functions: they control the expressions of the face and mastication, or chewing. On the other hand, all other facial muscles of expression are located superficial to the plane of the facial nerve and thus receive their innervation along their deep or posterior surfaces.

Anatomy- Muscles of Facial expression 1. The facial muscles (also known as the muscles of facial expression or mimetic muscles) enable facial expression and serve as sphincters and dilators of the orifices of the face.These muscles differ from those of other regions in the body as there is no fascia deep to the skin of the face; many of the facial muscles insert directly into the skin 1. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Return to Gross Anatomy HEAD AND NECK TABLE OF MUSCLES.

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Face Boundaries • Extends superiorly to the hair line, inferiorly to the chin and base of mandible, and on each side to auricle • Forehead is common to both scalp and face. Sensory Innervation of the Face & Muscles of Facial Expression 08-04-2019 2.