Zygomaticotemporal nerve
Encyclopedia
The zygomaticotemporal nerve or zygomaticotemporal branch (temporal branch) is derived from the maxillary branch of the trigeminal nerve (Cranial nerve V). It runs along the lateral wall of the orbit in a groove in the zygomatic bone
, receives a branch of communication from the lacrimal
, and passes through zygomaticotemporal foramen
in the zygomatic bone to enter the temporal fossa
.
It ascends between the bone, and substance of the Temporalis muscle
, pierces the temporal fascia
about 2.5 cm. above the zygomatic arch
, and is distributed to the skin of the side of the forehead
, and communicates with the facial nerve
and with the auriculotemporal branch of the mandibular nerve
.
As it pierces the temporal fascia
, it gives off a slender twig, which runs between the two layers of the fascia to the lateral angle of the orbit
.
Zygomatic bone
The zygomatic bone is a paired bone of the human skull. It articulates with the maxilla, the temporal bone, the sphenoid bone and the frontal bone. The zygomatic is homologous to the jugal bone of other tetrapods...
, receives a branch of communication from the lacrimal
Lacrimal
The term Lacrimal can refer to:*In typography:** A type of Stroke ending *In anatomy** Lacrimal apparatus** Lacrimal artery** Lacrimal bone...
, and passes through zygomaticotemporal foramen
Zygomaticotemporal foramen
Near the center of the temporal surface of the zygomatic bone is the zygomaticotemporal foramen for the transmission of the zygomaticotemporal nerve....
in the zygomatic bone to enter the temporal fossa
Temporal fossa
The temporal fossa is a shallow depression on the side of the skull bounded by the temporal lines and terminating below the level of the zygomatic arch.-Boundaries:...
.
It ascends between the bone, and substance of the Temporalis muscle
Temporalis muscle
The temporal muscle is one of the muscles of mastication.-Structure:It arises from the temporal fossa and the deep part of temporal fascia...
, pierces the temporal fascia
Temporal fascia
The temporal fascia covers the Temporalis muscle.It is a strong, fibrous investment, covered, laterally, by the Auricularis anterior and superior, by the galea aponeurotica, and by part of the Orbicularis oculi....
about 2.5 cm. above the zygomatic arch
Zygomatic arch
The zygomatic arch or cheek bone is formed by the zygomatic process of temporal bone and the temporal process of the zygomatic bone , the two being united by an oblique suture; the tendon of the Temporalis passes medial to the arch to gain insertion into the coronoid process...
, and is distributed to the skin of the side of the forehead
Forehead
For the Arsenal striker see GervinhoIn human anatomy, the forehead is the fore part of the head. It is, formally, an area of the head bounded by three features, two of the skull and one of the scalp. The top of the forehead is marked by the hairline, the edge of the area where hair on the scalp...
, and communicates with the facial nerve
Facial nerve
The facial nerve is the seventh of twelve paired cranial nerves. It emerges from the brainstem between the pons and the medulla, and controls the muscles of facial expression, and functions in the conveyance of taste sensations from the anterior two-thirds of the tongue and oral cavity...
and with the auriculotemporal branch of the mandibular nerve
Mandibular nerve
The mandibular nerve is the largest of the three branches of the trigeminal nerve.-Roots:It is made up of two roots:* a large sensory root proceeding from the inferior angle of the trigeminal ganglion....
.
As it pierces the temporal fascia
Temporal fascia
The temporal fascia covers the Temporalis muscle.It is a strong, fibrous investment, covered, laterally, by the Auricularis anterior and superior, by the galea aponeurotica, and by part of the Orbicularis oculi....
, it gives off a slender twig, which runs between the two layers of the fascia to the lateral angle of the orbit
Orbit
In physics, an orbit is the gravitationally curved path of an object around a point in space, for example the orbit of a planet around the center of a star system, such as the Solar System...
.
External links
- http://www.dartmouth.edu/~humananatomy/figures/chapter_47/47-2.HTM