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8 Cards in this Set
- Front
- Back
MAXILLARY NERVE
INFRAORBITAL NERVE -how do they course? -emerges on the face thru? |
2. Infraorbital nerve: courses forward along the floor of the orbit in the
infraorbital groove and infraorbital canal; emerges onto the face through the infraorbital foramen |
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MAXILLARY NERVE
ZYGOMATIC NERVE -how does it divide? -emerge onto the face thru? -branch to lacrimal nerve? |
3. Zygomatic nerve: upon entering the orbit, the zygomatic nerve divides
into the zygomaticotemporal and zygomaticofacial nerves, which pen- etrate the zygomatico-orbital foramina and emerge onto the face through the zygomaticotemporal and zygomaticofacial foramina, respectively; before entering its zygomatico-orbital foramen, the zygomaticotemporal nerve gives off a branch to the lacrimal nerve containing postganglionic parasympathetic secretomotor fibers from the pterygopalatine ganglion for the lacrimal gland |
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OPHTHALMIC ARTERY
-how does it arise in the cranial cavity? -enters? |
1. Arises within the cranial cavity from the internal carotid artery, traverses
the optic canal inferior to the optic nerve, enters the retrobulbar space lateral to the optic nerve, and then turns medially, superior to the optic nerve, to course with the nasociliary nerve; its branches are noted below |
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OPHTHALMIC ARTERY
CENTRAL ARTERY OF THE RETINA |
A. Ophthalmic artery
2. Central artery ofthe retina: arises as the ophthalmic artery emerges from the optic canal; penetrates the meninges ofthe optic nerve, courses for- ward in the center ofthe optic nerve and, upon entering the eye, sup- plies the retina |
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OPHTHALMIC ARTERY
LACRIMAL ARTERY |
A. Ophthalmic artery
3. Lacrimal artery: arises lateral to the optic nerve and ascends out ofthe retrobulbar space to course with the lacrimal nerve; supplies the lacri- mal gland and then gives rise to lateral palpebral arteries for the lateral parts ofthe upper and lower eyelids |
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OPHTHALMIC ARTERY
POSTERIOR CILIARY ARTERIES |
A. Ophthalmic artery
4. Posterior ciliary arteries: given off as the ophthalmic artery courses medially, superior to the optic nerve; they enter the eye near the optic nerve and, with the anterior ciliary arteries, supply most ofthe eye (an- terior ciliary arteries enter the anterior part ofthe eye and are derived from the variable muscular branches ofthe ophthalmic artery) |
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OPHTHALMIC ARTERY
SUPRAORBITAL ARTERY |
A. Ophthalmic artery
5. Supraorbital artery: given off after the ophthalmic artery has passed medially across the optic nerve; courses with the supraorbital nerve |
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OPHTHALMIC ARTERY
ANTERIOR/POSTERIOR ETHMOIDAL ARTERIES |
6. Anterior and posterior ethmoidal arteries: given off as the ophthalmic
artery courses anteriorly between the superior oblique and medial rec-tus; they pass into the anterior and posterior ethmoidal foramina with their respective nerves and supply the sphenoidal sinus, ethmoidal an cells, and nasal cavity |