Orbicularis oculi muscle
Updates to Article Attributes
The orbicularis oculi muscle is a ring like-like facial muscle functioning in a number of eyelid movements.
Gross anatomy
The orbicularis oculi is made up of three parts the orbital, palpabralpalpebral and lacrimal parts. Each has defined actions.
The orbicularis oculi is secured to the medial and lateral palpebral ligament forming a ring in the eyelid tissue centred about the anterior eye. It also inserts on the eyelid 'skeleton' the tarsal plate. It forms connections with the superficial muscular aponeurosisaponeurotic system (SMAS) of the face to frontalis, the temple and the cheek.
Orbital part
The orbital part forms the bulk of the muscle, can squeeze the eyelid closed tightly and is used in bright light.
Palpabral
Palpebral part
Has thinner fibres continuous with the orbital part. It functions to lightly close the eyelid.
Lacrimal part
Forms a small slip originating adjacent to the lactimallacrimal gland to insert on the lateral eyelid. It is thought to promote flow within the gland.
-<p>The orbicularis oculi muscle is a ring like muscle functioning in a number of eyelid movements. <br><br>Gross anatomy<br>The orbicularis oculi is made up of three parts the orbital, palpabral and lacrimal parts. Each has defined actions. <br>The orbicularis oculi is secured to the medial and lateral palpebral ligament forming a ring in the eyelid tissue centred about the anterior eye. It also inserts on the eyelid 'skeleton' the tarsal plate. It forms connections with the superficial muscular aponeurosis system (SMAS) of the face to frontalis, the temple and the cheek. </p><p>Orbital part<br>The orbital part forms the bulk of the muscle, can squeeze the eyelid closed tightly and is used in bright light.</p><p>Palpabral part<br>Has thinner fibres continuous with the orbital part. It functions to lightly close the eyelid. <br><br>Lacrimal part<br>Forms a small slip originating adjacent to the lactimal gland to insert on the lateral eyelid. It is thought to promote flow within the gland. </p>- +<p>The<strong> orbicularis oculi muscle</strong> is a ring-like <a title="facial muscle" href="/articles/facial-muscle">facial muscle</a> functioning in a number of eyelid movements.</p><h4>Gross anatomy</h4><p>The orbicularis oculi is made up of three parts the orbital, palpebral and lacrimal parts. Each has defined actions. </p><p>The orbicularis oculi is secured to the medial and lateral palpebral ligament forming a ring in the eyelid tissue centred about the anterior eye. It also inserts on the eyelid 'skeleton' the tarsal plate. It forms connections with the superficial muscular aponeurotic system (SMAS) of the face to frontalis, the temple and the cheek. </p><h5>Orbital part</h5><p>The orbital part forms the bulk of the muscle, can squeeze the eyelid closed tightly and is used in bright light.</p><h5>Palpebral part</h5><p>Has thinner fibres continuous with the orbital part. It functions to lightly close the eyelid. </p><h5>Lacrimal part</h5><p>Forms a small slip originating adjacent to the <a title="Lacrimal gland" href="/articles/lacrimal-gland">lacrimal gland</a> to insert on the lateral eyelid. It is thought to promote flow within the gland. </p>
References changed:
- 1. Keith L. Moore, Arthur F. Dalley, A. M. R. Agur. Clinically Oriented Anatomy. (2013) ISBN: 9781451119459 - <a href="http://books.google.com/books?vid=ISBN9781451119459">Google Books</a>
- 2. Last, R. J., McMinn, R. M. H.. Last's Anatomy, Regional and Applied. (1994) ISBN: 044304662X - <a href="http://books.google.com/books?vid=ISBN044304662X">Google Books</a>
- 3. Cunningham's Manual of Practical Anatomy: Volume I: Upper and Lower Limbs (Oxford Medical Publications). (1986) ISBN: 9780192631381 - <a href="http://books.google.com/books?vid=ISBN9780192631381">Google Books</a>
- Clinically Oriented Anatomy, Dalley and Moore, 4th ed. 1999 Last's Anatomy, Sinnatamaby, 12th ed. 2011 Cunningham's Manual of Practical Anatomy, Romanes, 15th ed. 1986
Sections changed:
- Anatomy
Systems changed:
- Head & Neck