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Veterinary Ocular Anatomy > Orbit > Flashcards

Orbit Flashcards

1
Q

According to Gelatt, how far from midline does the canine orbital axis deviate?

A

20 degrees

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2
Q

According to Gelatt, how far from midline does the feline orbital axis deviate?

A

10 degrees

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3
Q

According to Gelatt, how far from midline does the equine orbital axis deviate?

A

40 degrees

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4
Q

According to Gelatt, how far from midline does the porcine orbital axis deviate?

A

35 degrees

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5
Q

According to Gelatt, how far from midline does the ox/sheep orbital axis deviate?

A

50 degrees

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6
Q

According to Gelatt, how many degrees of binocular overlap are there in the equine visual field?

A

65 degrees

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7
Q

According to Gelatt, how many degrees of binocular overlap are there in the primate visual field?

A

124 degrees

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8
Q

According to Gelatt, how many degrees of uniocular vision are there in the equine visual field?

A

146 per field (there are two of these for a total of 292 degrees of uniocular vision)

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9
Q

According to Gelatt, how many degrees of uniocular vision are there in the primate visual field?

A

42 per field (there are two of these for a total of 84 degrees of uniocular vision)

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10
Q

According to Gelatt, what is the blind area, in degrees, of the equine visual field?

A

3 degrees

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11
Q

According to Gelatt, what is the blind area, in degrees, of the primate visual field?

A

152 degrees

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12
Q

According to Gelatt, what bones make up the canine orbit?

A

lacrimal, zygomatic, frontal, sphenoid, palatine, maxillary.

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13
Q

According to Gelatt, what bones make up the feline orbit?

A

lacrimal, zygomatic, frontal, sphenoid, palatine, maxillary.

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14
Q

According to Gelatt, what bones make up the equine orbit?

A

lacrimal, zygomatic, frontal, sphenoid, palatine, temporal.

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15
Q

According to Gelatt, what bones make up the bovine and ovine orbit?

A

lacrimal, zygomatic, frontal, sphenoid, palatine, maxillary.

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16
Q

According to Gelatt, what bones make up the caprine orbit?

A

lacrimal, zygomatic, frontal, sphenoid, palatine.

17
Q

According to Gelatt, what bones make up the porcine orbit?

A

lacrimal, zygomatic, frontal, sphenoid, palatine, ethmoid.

18
Q

According to Gelatt, what bones make up the rabbit orbit?

A

lacrimal, zygomatic, frontal, sphenoid, palatine, temporal. (same as horse)

19
Q

According to Gelatt, what bones make up the human orbit?

A

lacrimal, zygomatic, frontal, sphenoid, palatine, maxillary, ethmoid.

20
Q

Which species possess a rostral alar foramen, and what passes through it?

A
  • canine, feline, equine.
  • maxillary artery and nerve
    (Gelatt)
21
Q

Which species possess an ethmoidal foramen, and what passes through it?

A
  • all domestic species
  • ethmoidal vessels and nerve
    (Gelatt)
22
Q

Which species possess an orbital fissure, and what passes through it?

A
  • canine, feline, equine
  • oculomotor nerve, trochlear nerve, ophthalmic (branch of maxillary) nerve, abducens nerve.
    (Gelatt)
23
Q

What are the orbital dimension in the cat?

A

24mm wide, 26mm high, 23mm between orbital axes.

Gelatt

24
Q

What are the orbital dimension of the dog?

A

29mm wide, 28mm high, 49mm deep, 36mm between orbital axes.
(Gelatt)

25
Q

What are the orbital dimensions of the horse?

A

62mm wide, 59mm high, 98mm deep, 173mm between orbital axes.
(Gelatt)

26
Q

What are the orbital dimension of the cow?

A

65mm wide, 64mm high, 120mm deep, 151mm between orbital axes.
(Gelatt)

27
Q

Which species has an orbitorotundum, and what passes through it?

A
  • bovine
  • cranial nerves 3 and 4, retinal and internal maxillary arteries.
    (Gelatt)
28
Q

Which species possess an optic foramen and what passes through it?

A
  • all domestic species
  • optic nerve, internal ophthalmic artery
    (Gelatt)
29
Q

Which species possess a foramen rotundrum, and what passes through it?

A
  • canine, feline, equine
  • maxillary nerve
    (Gelatt)
30
Q

Which species possess a supraorbital foramen, and what passes through it?

A
  • bovine, equine, canine (sometimes feline)
  • supraorbital vessels and nerve
    (Gelatt)
31
Q

Which species possess a caudal palatine foramen, and what passes through it?

A
  • all domestic species
  • major palatine vessels and nerve
    (Gelatt)
32
Q

Which species possess a maxillary foramen, and what passes through it?

A
  • all domestic species
  • infraorbital vessels and nerve
    (Gelatt)
33
Q

Which species possess a sphenopalatine foramen, and what passes through it?

A
  • all domestic species
  • sphenopalatine vessels and pterygopalatine nerve
    (Gelatt)
34
Q

Where does Tenon’s capsule attache to?

A

corneoscleral junction, blends and becomes continuous with the fascia surrounding the EOM’s
(Gelatt)

35
Q

The periorbita of the dog does not always attach to the periosteum of what bones?

A
  • frontal and sphenoid

Gelatt

Veterinary Ocular Anatomy (1 decks)

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