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Oral Anatomy the SKULL > Orbits > Flashcards

Orbits Flashcards

1
Q

The holes where the eyes go is called?

A

Orbits

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2
Q

Orbits are composed of what bones?

A

Frontal, Ethmoid, Lacrimal, zygomatic, sphenoid, maxilla

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3
Q

Ethmoid bones is part of the orbits is it anterior or posterior?

A

Posterior

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4
Q

Lacrimal bones is part of the orbits is it anterior or posterior?

A

Anterior

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5
Q

In the orbits the frontal bone is located where?

A

Superior wall

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6
Q

What creates the median wall in the orbits?

A

Ethmoid and Lacrimal

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7
Q

What creates the lateral wall of orbit?

A

Zygomatic and sphenoid bones

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8
Q

What creates the inferior wall of the orbit/floor of the orbit?

A

Maxilla

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9
Q

What bone is the apex of the orbit?

A

Sphenoid bone

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10
Q

What is the weakest part of the orbit?

A

Maxilla bone/inferior wall (floor)

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11
Q

What is a fissure?

A

Opening in bone that is narrow and cleft like

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12
Q

What cranial nerves go through the superior orbital fissure?

A

III, IV, V, VI (3, 4, 5, 6)

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13
Q

Nerve V and how many roots/trunks?

A

3, (V1, V2, V3)

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14
Q

What vein drains the superior orbital fissure?

A

Ophthalmic vein (superior)

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15
Q

What drains muscles of extra-occular movement?

A

Ophthalmic vein (superior)

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16
Q

Where is the superior orbital fissure located?

A

Between the greater and lesser wings of sphenoid

17
Q

What cranial nerves o through the inferior orbital fissure?

A

Branches of V2

18
Q

The nerves of V2 that transfer through the inferior orbit fissure are?

A

Infraorbital and zygomatic nerves

19
Q

What is the artery that goes to the inferior orbital fissure?

A

Infraorbital artery

20
Q

What is the vein that goes to the inferior orbital fissure?

A

Ophthalmic vein

21
Q

Where is the inferior orbital fissure located?

A

Between greater wing of sphenoid and maxilla

22
Q

What transmits cranial nerve II?

A

Optic Canal

23
Q

What transmits Ophthalmic artery?

A

Optic Canal

24
Q

Where is the optic canal located?

A

Within the lesser wing of sphenoid

25
Q

Where is the infraorbital foramen located?

A

Maxilla

26
Q

Infraorbital foramen transmits what nerve?

A

Infraorbital nerve

27
Q

Infraorbital nerve is a direct continuation of?

A

V2

28
Q

What isn’t part of the orbit but is close?

A

Infraorbital foramen

Oral Anatomy the SKULL (7 decks)

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