Latin}}} 
Official status
Official language of: Vatican City
Used for official purposes, but not spoken in everyday speech
Regulated by: Opus Fundatum Latinitas
Roman Catholic Church
Language codes
ISO 639-1: la
ISO 639-2: lat
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The sphenoidal sinuses (or sphenoid) contained within the body of the sphenoid vary in size and shape; owing to the lateral displacement of the intervening septum they are rarely symmetrical.

The following are their average measurements: vertical height, 2.2 cm.
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The ethmoid sinus, one of the paranasal sinuses, is the collective name for the ethmoidal air cells.

Each ethmoid sinus is an air-space enclosed within the ethmoid bone.
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The nasociliary nerve is a branch of the ophthalmic nerve. It is intermediate in size between the two other main branches of the ophthalmic nerve, the frontal nerve and the lacrimal nerve, and is more deeply placed.
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Elsevier, the world's largest publisher of medical and scientific literature, forms part of the Reed Elsevier group. Based in Amsterdam, the company has substantial operations in the UK, USA and elsewhere.
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The nasociliary nerve is a branch of the ophthalmic nerve. It is intermediate in size between the two other main branches of the ophthalmic nerve, the frontal nerve and the lacrimal nerve, and is more deeply placed.
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posterior ethmoidal foramen opens at the back part of this margin under cover of the projecting lamina of the sphenoid, and transmits the posterior ethmoidal vessels and nerve.

Additional images

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The posterior ethmoidal artery is an artery of the head. It is smaller than the anterior ethmoidal artery, branches off from the ophthalmic artery when it reaches the medial wall of the orbit.
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The sphenoidal sinuses (or sphenoid) contained within the body of the sphenoid vary in size and shape; owing to the lateral displacement of the intervening septum they are rarely symmetrical.

The following are their average measurements: vertical height, 2.2 cm.
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eMedicine is an online clinical medical knowledge base that was founded in 1996 by Scott Plantz and Richard Lavely, two medical doctors. It was sold to WebMD in January 2006.
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Loyola University Chicago is a private co-educational religious-affiliated university established in Chicago in 1870 as Saint Ignatius College. It was founded by the Roman Catholic religious order of the Society of Jesus and bears the name of the Jesuit patron, Saint Ignatius of
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Georgetown University is a private, Jesuit, research university, located in Washington, D.C.'s Georgetown neighborhood. Father John Carroll founded the school in 1789, though its roots extend back to 1634.
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Cranial nerves are nerves that emerge directly from the brain in contrast to spinal nerves which emerge from segments of the spinal cord. Although thirteen cranial nerves in humans fit this description, twelve are conventionally recognized.
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The trigeminal nerve (the fifth cranial nerve, also called the fifth nerve or simply V) is responsible for sensation in the face. It is similar to the spinal nerves C2–S5, which are responsible for sensation in the rest of the body.
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The ophthalmic nerve is one of the three branches of the trigeminal nerve, the fifth cranial nerve. Like the maxillary branch of the trigeminal nerve, the ophthalmic branch carries sensory fibers only.
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The lacrimal nerve is the smallest of the three branches of the ophthalmic.

It sometimes receives a filament from the trochlear nerve, but this is possibly derived from the branch which goes from the ophthalmic to the trochlear nerve.
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The frontal nerve is the largest branch of the ophthalmic, and may be regarded, both from its size and direction, as the continuation of the nerve.

It enters the orbit through the superior orbital fissure, and runs forward between the Levator palpebræ superioris and the
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The supraorbital nerve is a terminal branch of the frontal nerve.

It passes through the supraorbital foramen, and gives off, in this situation, palpebral filaments to the upper eyelid.
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The nasociliary nerve is a branch of the ophthalmic nerve. It is intermediate in size between the two other main branches of the ophthalmic nerve, the frontal nerve and the lacrimal nerve, and is more deeply placed.
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The long root of the ciliary ganglion usually arises from the nasociliary between the two heads of the lateral rectus muscle. It is also called the nasociliary nerve's communicating branch to the ciliary ganglion.
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The long ciliary nerves, two or three in number, are given off from the nasociliary, as it crosses the optic nerve.

They accompany the short ciliary nerves from the ciliary ganglion, pierce the posterior part of the sclera, and running forward between it and the choroid,
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The infratrochlear nerve is given off from the nasociliary just before it enters the anterior ethmoidal foramen.

It runs forward along the upper border of the medial rectus, and is joined, near the pulley of the superior oblique, by a filament from the supratrochlear nerve.
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The anterior ethmoidal nerve is a nerve which provides sensory branches to the nasal cavity.^[1]

See also

• anterior ethmoidal artery
• ethmoidal foramina

Specifically, innervates the septum of the nasal cavity.
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The ciliary ganglion is a parasympathetic ganglion located in the posterior orbit. It measures 1- 2 millimeters in diameter and contains approximately 2,500 neurons^[1]. Preganglionic axons from the Edinger-Westphal nucleus form synapses with these cells.
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The branches of the ciliary ganglion are the short ciliary nerves.

These are delicate filaments, from six to ten in number, which arise from the forepart of the ganglion in two bundles connected with its superior and inferior angles; the lower bundle is the larger.
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The maxillary nerve (superior maxillary nerve), or second division of the trigeminal, is a sensory nerve.

It is intermediate, both in position and size, between the ophthalmic nerve and the mandibular nerve.
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The middle meningeal nerve (meningeal or dural branch) is given off from the maxillary nerve directly after its origin from the semilunar ganglion

It accompanies the middle meningeal artery and supplies the dura mater.
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The pterygopalatine fossa is a fossa in the skull.

Boundaries

It has the following boundaries:

• anterior: maxilla (back surface - palatine process of maxilla)
• posterior: sphenoid bone (pterygoid process)
• medial

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The zygomatic nerve (temporomalar nerve; orbital nerve) is a branch of the maxillary nerve (a trigeminal nerve branch) that enters the orbit and helps to supply the skin over the zygomatic and temporal bones.
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