Walls of Orbit Flashcards by Don Peter John Bugarin | Brainscape

Q

Shape of The Orbit:

A

Quadrilateral Pyramid

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Q

base of Orbit:

A

Orbital margin

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Q

Apex of Orbit:

A

Optic Foramen

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Q

measurement of ORBIT:

A

40 mm in Height, Width, & depth

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Q

Volume of Orbit:

A

29-30 ml

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Q

Shape of Roof of Orbit:

A

Triangular

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Q

shape of Medial wall of Orbit:

A

Quadrilateral

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Q

shape of Floor of Orbit:

A

Triangular

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Q

shape of lateral wall of orbit:

A

Triangular

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Q

Bones in roof of Orbit:

A

Frontal Bone

Sphenoid bone (lesser wing)

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Q

thinnest wall of orbit

A

Medial Wall

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Q

Thickest & Strongest wall of Orbit:

A

Lateral wall / outer wall

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Q

structures present at roof of orbit:

A

Lacrimal Fossa for LACRIMAL GLANDS

Trochlea or Fovea trochlealis

Fronto-sphenoidal suture

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Q

fibro cartilaginous loop/sling at frontal bone

serves as pulley for SO

A

Trochlea or Fovea trochlealis

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Q

Bones in Medial wall of Orbit:

A

Sphenoid

Maxillary

os planum of Ethmoid bone (LAMINA PAPYRACEA)

Lacrimal bone

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Q

contains os planum or Lamina Papyracea (thin as paper)

A

Ethmoid BONE

Q

Structure present in medial wall:

A

Lacrimal fossa for LACRIMAL SAC

Q

Bones in Floor of orbit:

A

Maxilla

Palatine

Zygomatic

Q

Structure present in orbital Floor:

A

Maxillary sinus / Maxillary antrum

Q

Bones in Lateral wall of orbit:

A

Sphenoid - Greater wing

Zygomatic Bone

Q

Structures present in Lateral Wall:

A

Lateral orbital Tubercle:

Q

Structures attaching Lateral orbital tubercle:

A

Check ligament of LR

Ligament of Lockwood

Lateral Palpebral Ligament

Aponeurosis of LPS