Medial Rectus Muscle
| |

Medial Rectus Muscle

Introduction The medial rectus muscle is a muscle that is in the orbit near the eye. It is an extraocular muscle of the eye. It arises from the ordinary tendinous ring and inserts into the anteromedial surface of the eye. It is innervated by the inferior division of the oculomotor nerve (III). It rotates the eye medially (adduction). Origin and Insertion of Medial Rectus…

inferior rectus
| | |

Inferior Rectus Muscle

Introduction : The inferior rectus is one of the seven extraocular muscles and is primarily responsible for letting the eye down (down gaze). The inferior rectus is one of the rectus muscles, which also has the superior rectus, the medial rectus, and the lateral rectus. There are two oblique muscles also, the superior oblique and…

lateral rectus muscle
| | |

Lateral Rectus muscle

Introduction The lateral rectus muscle is one of the seven extraocular muscles. These muscles control every eye movement; generally, one muscle moves the eye in one direction, and the combination of all of them allows the eye to move in each direction. Extraocular muscles include 4 rectus muscles (medial, lateral, superior, and inferior rectus), 2…

Depressor labii inferioris muscle
| | |

Depressor labii inferioris Muscle

Introduction The depressor labii inferioris is a facial muscle that permits you to pull your lower lip down or to the side. While this muscle has very limited action on its own, it plays an important role in the complex structure of facial muscles that allow us to make such detailed and specific facial expressions….

Levator labii superioris muscle
| | |

Levator labii superioris Muscle

Introduction The levator labii superioris muscles, also known as the quadratus labii, contribute to facial expression and action of the mouth and upper lip. It courses alongside the lateral aspect of the nose, and its preliminary function is the elevation of the upper lip. It is also implicated in movements such as expressions of disgust,…

Depressor anguli oris muscle
| | |

Depressor anguli oris muscle

Introduction Depressor anguli oris muscles is a paired triangular muscle that expands from the mental tubercle of the mandible to the angle of the mouth. It belongs to the buccolabial group of facial muscles also with levator labii superioris alaeque nasi, levator labii superioris, zygomaticus major, zygomaticus minor, levator anguli oris, risorius, depressor labii inferioris…

Tensor-tympani muscle
| |

Tensor tympani muscle

Introduction The tensor tympani is tiny, but the long paired muscles of the middle ear. Concurrently with the stapedius, it belongs to the group of intratympanic muscles. Tensor tympani regales a bony canal encountered superior to the osseous part of the auditory tube (pharyngotympanic tube; Eustachian tube). Its attachment to the malleus, one of the…

superior tarsal
| |

Superior Tarsal Muscle

Introdution of Superior tarsal The superior tarsal muscle is a smooth muscle bordering the levator palpebrae superioris muscle that permits to raise of the upper eyelid. Not to be mistaken with the orbitalis muscle or the circular fibres of the ciliary muscle, both of which are also known as Müller’s muscle. The superior tarsal (Muller’s…