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The corrugator supercilii muscle is a small, narrow, pyramid-shaped muscle of the face. It is located at the medial end of the eyebrow and is responsible for producing vertical frown lines. The muscle draws the eyebrow downward and medially, resulting in a frowning expression. It also serves to protect the eyes from bright sunlight by pulling the eyebrows towards the bridge of the nose. In some cases, the corrugator supercilii muscle is targeted for aesthetic treatments or to prevent certain types of migraines.
| Characteristics | Values |
|---|---|
| Name | Corrugator supercilii muscle |
| Type | Small, narrow, pyramidal muscle |
| Location | Deep to the medial end of each eyebrow |
| Function | Draws the eyebrows together medially and inferiorly, producing vertical wrinkles over the glabella and an expression of frowning |
| Blood Supply | Supraorbital and supratrochlear arteries of the ophthalmic artery |
| Innervation | Temporal branches of the facial nerve (CN VII) |
| Clinical Significance | Sometimes surgically altered or paralysed with botulinum toxin for aesthetic or medical reasons |
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What You'll Learn
- The corrugator supercilii muscle is located at the medial end of the eyebrow
- It draws the eyebrows together, producing vertical wrinkles and a frowning expression
- The muscle is innervated by the temporal branches of the facial nerve
- The ophthalmic artery, a branch of the internal carotid artery, supplies blood to the muscle
- The corrugator supercilii muscle can be paralysed with botulinum toxin (Botox) for aesthetic reasons or to prevent migraines
The corrugator supercilii muscle is located at the medial end of the eyebrow
The corrugator supercilii muscle is situated deep to the frontalis muscle (of the occipitofrontalis muscle) and the orbicularis oculi muscle, with which it partially blends. Its fibres are located between the palpebral and orbital portions of the orbicularis oculi muscle. The supratrochlear nerve passes between this muscle and the frontalis muscle. The muscle acts in tandem with the orbicularis oculi muscle.
The corrugator supercilii muscle acts upon the skin of the forehead superior to the middle of the supraorbital margin. It is responsible for producing vertical wrinkles of the forehead just above the nose. The muscle is sometimes surgically severed or paralysed with botulinum toxin (Botox) as a preventive treatment for some types of migraine or for aesthetic reasons.
The corrugator supercilii muscle receives blood supply from the supraorbital and supratrochlear arteries of the ophthalmic artery, which is a branch of the internal carotid artery. Venous blood is drained from the corrugator supercilii by the superior ophthalmic vein, which flows into the cavernous sinus. The muscle is innervated by the temporal branches of the facial nerve (CN VII).
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It draws the eyebrows together, producing vertical wrinkles and a frowning expression
The corrugator supercilii muscle is a small, narrow, pyramidal muscle of the face. It is located at the medial end of the eyebrow, where it draws the eyebrows together, producing vertical wrinkles and a frowning expression.
The muscle is responsible for producing the vertical "frowning" wrinkles of the forehead. When contracted, it pulls the eyebrows together, drawing them downward and medially, which results in the characteristic frown lines. This muscle is often referred to as the "frowning" muscle and is considered the primary muscle used in expressions of suffering or agony.
The corrugator supercilii muscle is situated deep to the frontalis muscle and the orbicularis oculi muscle, with which it partially blends. Its fibres are positioned between the palpebral and orbital portions of the orbicularis oculi muscle. The corrugator supercilii muscle acts upon the skin of the forehead, superior to the middle of the supraorbital margin, pulling the eyebrows towards the bridge of the nose. This action creates a roof-like structure over the eyes, shielding them from strong sunlight or rain.
The corrugator supercilii muscle is sometimes surgically severed or paralysed with botulinum toxin (Botox) for aesthetic reasons or as a preventive treatment for certain types of migraines. Its function in facial expressions and protection from glare highlights the importance of understanding this muscle when considering Botox or Dysport injections in the forehead region.
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The muscle is innervated by the temporal branches of the facial nerve
The corrugator supercilii muscle is a small, narrow, pyramid-shaped muscle of the face. It is located at the medial end of the eyebrow and draws the eyebrow downward and medially, producing vertical "frowning" wrinkles on the forehead. It is often referred to as the "frowning" muscle and is considered the principal muscle in the expression of suffering.
The corrugator supercilii muscle is innervated by the temporal branches of the facial nerve (CN VII). This means that it receives motor signals from these nerve branches that allow it to contract and produce facial expressions. The nerve signals allow the muscle to act in tandem with the orbicularis oculi muscle, with which it partially blends.
The facial nerve is a cranial nerve that plays an important role in facial expression and movement. It has several branches, including the temporal branch, which specifically innervates the corrugator supercilii muscle. This nerve provides the muscle with the ability to contract and relax, allowing for a range of facial expressions.
The corrugator supercilii muscle receives arterial blood from the ophthalmic artery, a branch of the internal carotid artery. The ophthalmic artery provides blood to many structures in the orbit and around the eye, including the corrugator supercilii muscle. A small portion of arterial blood is also supplied by branches of the superficial temporal artery, which originates from the external carotid artery.
The corrugator supercilii muscle is sometimes targeted in cosmetic procedures, such as Botox injections or surgical severing, to reduce the appearance of frown lines or for the treatment of migraines. Its function in facial expression and protection of the eyes from bright sunlight makes it an important muscle in the upper portion of the face.
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The ophthalmic artery, a branch of the internal carotid artery, supplies blood to the muscle
The corrugator supercilii muscle, or the "frowning" muscle, is a small, narrow, pyramid-shaped muscle of the face. It is located at the medial end of the eyebrow and is responsible for producing vertical frown lines. It draws the eyebrow downward and medially, creating an expression of suffering. This muscle also shields the eyes from strong sunlight by pulling the eyebrows towards the bridge of the nose, forming a roof over the eye.
The ophthalmic artery, a branch of the internal carotid artery, supplies blood to the corrugator supercilii muscle. The ophthalmic artery travels through the orbit through the optic canal and divides into many branches, including the supraorbital artery, supratrochlear artery, lacrimal artery, central retinal artery, ethmoidal arteries, ciliary arteries, and inferior and superior muscular arteries.
The corrugator supercilii muscle receives blood supply from the supraorbital and supratrochlear arteries, which are branches of the ophthalmic artery. This muscle is also supplied by a small portion of arterial blood from branches of the superficial temporal artery, which originates from the external carotid artery.
The corrugator supercilii muscle is sometimes intentionally paralysed or severed for aesthetic reasons or to prevent certain types of migraines. This procedure can be done through chemodenervation with botulinum toxin (Botox) or surgery.
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The corrugator supercilii muscle can be paralysed with botulinum toxin (Botox) for aesthetic reasons or to prevent migraines
The corrugator supercilii muscle is a small, narrow, pyramid-shaped muscle of the face. It is located at the medial end of the eyebrow, and its fibres pass laterally from its origin to its insertion. This muscle draws the eyebrow downward and medially, producing the vertical "frowning" wrinkles of the forehead. It is considered the principal muscle in the facial expression of suffering.
Botox injections target the corrugator supercilii muscle to weaken its ability to contract and form wrinkles. The injections are placed directly into the body of the muscle to maximise their effectiveness. However, due to the intermingling fibres between the corrugator and the frontalis muscle, it is challenging to inject one without affecting the other. As a result, medical professionals must carefully consider the injection sites and dosage amounts to achieve the desired outcome.
In addition to aesthetic benefits, corrugator supercilii paralysis with Botox can also be used as a preventive treatment for certain types of migraines. The muscle's role in shielding the eyes from bright sunlight by pulling the eyebrows towards the bridge of the nose can contribute to migraine triggers in some individuals. By paralysing this muscle, the eyebrows are prevented from forming this protective position, thereby reducing the potential for migraine attacks induced by bright light.
Overall, the corrugator supercilii muscle plays a significant role in facial expressions and eye protection, but its paralysis through botulinum toxin injections offers both cosmetic and therapeutic benefits for individuals seeking to reduce frown lines or manage specific types of migraines.
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Frequently asked questions
The corrugator supercilii is a small, pyramid-shaped muscle located at the medial end of the eyebrow. It draws the eyebrow downward and medially, producing vertical "frowning" wrinkles on the forehead.
The main function of the corrugator supercilii muscle is to produce facial expressions, particularly those associated with suffering or frowning. It also serves to reduce glare from bright sunlight by pulling the eyebrows towards the bridge of the nose, creating a shield for the eyes.
The corrugator supercilii muscle can be paralysed using botulinum toxin (Botox) or surgically severed to reduce wrinkles and improve facial aesthetics. It is also sometimes treated as a preventive measure for certain types of migraines.
