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14 Cards in this Set
- Front
- Back
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What is the pupil shape in the large animals?
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Horizontally oval
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does the horse have a round orb?
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No, they can move their head to focus differently on objects.
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What is this?
What type of animals have them? Are they normal? |
Iridic granules
ungulates normal - provide nutrition or shade to the eye |
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How do large animal tears flow?
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Tears go through lacrimal puncta to lacrimal canaliculi to lacrimal sac to nasolacrimal duct.
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Where is the auriculopalpebral n. blocked in the horse for ocular exams?
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Block at the summit of the zygomatic arch
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What does auriculopalpebral n. branch off of?
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facial n.
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Where is the supraorbital n. blocked in the horse for ocular exams?
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Block as it emerges through the supraorbital foramen in the zygomatic process of the frontal bone
Desensitizes the forehead, including the middle two thirds of the upper eyelid |
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What is supraorbital n. a branch off of?
What is it sensory to? |
Branch of ophthalmic division of trigeminal n.
Sensory from part of the superior palpebra |
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What is zygomatic br of auriculopalpebral n. motor to?
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Motor to orbicularis oculi m.
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In the bovine, what nerves exit through the foramen orbitorotundum?
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Oculomotor, trochlear and abducens nn. (Motor to the extrinsic eye muscles)
Ophthalmic n. of trigeminal n. (Sensory from the superior palpebra, lacrimal gland, skin of medial canthus, sclera and cornea) Maxillary n. of trigeminal n. (Sensory from the lateral canthus, skin of inferior palpebra and ventral to this region, and skin between the eye and ear) |
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What are the nerves to block during the enucleation of the bovine eye?
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Oculomotor, trochlear and abducens nn., Ophthalmic n. of trigeminal n., Maxillary n. of trigeminal n., Auriculopalpebral n. of facial n.
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What is the goal of the Peterson eye block in the bovine?
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Anesthetizes the nerves exiting the foramen orbitorotundum for enucleation of the bovine eye
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What is the site of anesthetic block of the Peterson eye block in the bovine?
What do you need to look out for? |
just rostral to the foramen orbitorotundum. Insert needle in depression just caudal to angle formed by frontal and temporal processes of zygomatic bone
Pterygoid crest is located lateral to foramen orbitorotundum |
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What nerves serve the areas marked A, B, C, D, G, and I of this house head? Don't look at the caption!
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A) supraorbital n.
B) lacrimal n. C) infratrochlear n. D) zygomatic n. G) infraorbital n. I) mental nn. |
