Zygomatic Arc

	Zygomatic Arc Zygomatic (from Greek ''ζύγωμα'' (''zygōma''), "yoke") may refer to: * Zygomatic arch * Zygomatic bone * Zygomatic branches of the facial nerve * Zygomaticus major muscle * Zygomaticus minor muscle * Zygomatic nerve * Zygomatic process Zygomatic process of frontal bone Zygomatic process of maxilla ** Zygomatic process of temporal bone The zygomatic processes (aka. malar) are three processes (protrusions) from other bones of the skull which each articulate with the zygomatic bone. The three processes are: * Zygomatic process of frontal bone from the frontal bone * Zygomatic ... {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon]
picture info	Zygomatic Arch In anatomy, the zygomatic arch (colloquially known as the cheek bone), is a part of the skull formed by the zygomatic process of temporal bone, zygomatic process of the temporal bone (a bone extending forward from the side of the skull, over the opening of the ear) and the temporal Process (anatomy), process of the zygomatic bone (the side of the cheekbone), the two being united by an oblique Suture (anatomy), suture (the zygomaticotemporal suture); the tendon of the temporal muscle passes medial to (i.e. through the middle of) the arch, to gain insertion into the coronoid process of the mandible (jawbone). The jugal point is the point at the anterior (towards face) end of the upper border of the zygomatic arch where the Masseter muscle, masseteric and Maxilla, maxillary edges meet at an angle, and where it meets the process of the zygomatic bone. The arch is typical of ''Synapsida'' ("fused arch"), a clade of amniotes that includes mammals and their extinct relatives, such as ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon]
picture info	Zygomatic Bone In the human skull, the zygomatic bone (from ), also called cheekbone or malar bone, is a paired irregular bone, situated at the upper and lateral part of the face and forming part of the lateral wall and floor of the orbit, of the temporal fossa and the infratemporal fossa. It presents a malar and a temporal surface; four processes (the frontosphenoidal, orbital, maxillary, and temporal), and four borders. Etymology The term ''zygomatic'' derives from the Ancient Greek , ''zygoma'', meaning "yoke". The zygomatic bone is occasionally referred to as the zygoma, but this term may also refer to the zygomatic arch. Structure Surfaces The ''malar surface'' is convex and perforated near its center by a small aperture, the zygomaticofacial foramen, for the passage of the zygomaticofacial nerve and vessels; below this foramen is a slight elevation, which gives origin to the zygomaticus muscle. The ''temporal surface'', directed posteriorly and medially, is concave, prese ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon]
	Zygomatic Branches Of The Facial Nerve The zygomatic branches of the facial nerve (malar branches) are nerves of the face. They run across the zygomatic bone to the lateral angle of the orbit. Here, they supply the orbicularis oculi muscle, and join with filaments from the lacrimal nerve and the zygomaticofacial branch of the maxillary nerve (CN V2). Structure The zygomatic branches of the facial nerve are branches of the facial nerve (CN VII). They run across the zygomatic bone to the lateral angle of the orbit. This is deep to zygomaticus major muscle. They send fibres to orbicularis oculi muscle. Connections The zygomatic branches of the facial nerve have many nerve connections. Along their course, there may be connections with the buccal branches of the facial nerve. They join with filaments from the lacrimal nerve and the zygomaticofacial nerve from the maxillary nerve (CN V2). They also join with the inferior palpebral nerve and the superior labial nerve, both from the infraorbital nerve. Functi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon]
	Zygomaticus Major Muscle The zygomaticus major muscle is a muscle of the face. It arises from either zygomatic arch (cheekbone); it inserts at the corner of the mouth. It is innervated by branches of the facial nerve (cranial nerve VII). It is a muscle of facial expression, which draws the angle of the mouth superiorly and posteriorly to allow one to smile. Bifid zygomaticus major muscle is a notable variant, and may cause cheek dimples. Structure Origin The zygomaticus major muscle originates from the superior margin of the lateral surface of the temporal process of zygomatic bone, just anterior to the zygomaticotemporal suture. Insertion It inserts at the corner of the mouth by blending with the levator anguli oris muscle, the orbicularis oris muscle, and the deeper muscular structures. Nerve supply The muscle receives motor innervation from the buccal branch and zygomatic branch of the facial nerve (CN VII). Vasculature The muscle receives arterial supply from the superior labi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon]
	Zygomaticus Minor Muscle The zygomaticus minor muscle is a muscle of facial expression. It originates from the zygomatic bone, lateral to the rest of the levator labii superioris muscle, and inserts into the outer part of the upper lip. It draws the upper lip backward, upward, and outward and is used in smiling. It is innervated by the facial nerve (VII). Structure The zygomaticus minor muscle passes inferomedially from its origin to its insertion at an angle of approximately 30°. It has a mean width of around 0.5 cm. Origin It originates from the lateral aspect of just posterior to the zygomaticomaxillary suture. Insertion It inserts into the muscular tissue of the upper lip, blending distally with levator labii superioris muscle. Innervation The zygomaticus minor muscle receives motor innervation from the zygomatic branches and buccal branches of the facial nerve (CN VII). Relations The zygomaticus minor lies lateral to the rest of levator labii superioris muscle, and medial to its s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon]
	Zygomatic Nerve The zygomatic nerve is a branch of the maxillary nerve (itself a branch of the trigeminal nerve (CN V)). It arises in the pterygopalatine fossa and enters the orbit through the inferior orbital fissure before dividing into its two terminal branches: the zygomaticotemporal nerve and zygomaticofacial nerve. Through its branches, the zygomatic nerve provides sensory invervation to skin over the zygomatic bone and the temporal bone. It also carries post-ganglionic parasympathetic axons to the lacrimal gland. It may be blocked by anaesthetising the maxillary nerve. Structure Origin The zygomatic nerve is a branch of the maxillary nerve (CN V2). It arises at the pterygopalatine ganglion. Course It exits from the pterygopalatine fossa through the inferior orbital fissure to enter the orbit. In the orbit, it travels anteriorly along its lateral wall. Branches Soon after the zygomatic nerve enters the orbit, it divides into its branches. These include: * Zygomaticotemporal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon]
	Zygomatic Process The zygomatic processes (aka. malar) are three processes (protrusions) from other bones of the skull which each articulate with the zygomatic bone. The three processes are: * Zygomatic process of frontal bone from the frontal bone * Zygomatic process of maxilla from the maxilla * Zygomatic process of temporal bone from the temporal bone The term ''zygomatic'' derives . The zygomatic process is occasionally referred to as the zygoma, but this term usually refers to the zygomatic bone or occasionally the zygomatic arch. Zygomatic process of frontal bone The supraorbital margin of the frontal bone ends laterally in its zygomatic process, which is strong and prominent, and articulates with the zygomatic bone. The zygomatic process of the frontal bone extends from the frontal bone laterally and inferiorly. Zygomatic process of maxilla The zygomatic process of the maxilla [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon]