Head & Neck 6 Flashcards
Name the four relevant structures relating to the lacrimal gland and be sure of their location
Lacrimal canal
Lacrimal sac
Nasolacrimal Duct
Inferior meatus of nasal cavity
Name, from the top clockwise (if viewed from the front), the bones involved in forming the orbit
Hint: 6
Frontal Ethmoid Lacrimal Maxilla Zygomatic Sphenoid (more back and centre)
Boundary time. Apex of the orbit please.
Optic canal
Roof of the orbit?
Hint: 2
Frontal and sphenoid bones
Lateral wall of the orbit?
Hint: 2
Zygomatic and sphenoid bones
Medial wall of the orbit?
Hint: 4
Ethmoid, maxillary, lacrimal and sphenoid bones
Base of the orbit? Hint: 2
Maxillary and zygomatic bones
Name the three most important openings at the back of the orbit
Optic Canal (obviously)
Superior Orbital Fissure
Inferior Orbital Fissure
Name the contents of the optic canal
Hint: 2
Optic nerve
Opthalmic artery
List the contents of the superior orbital fissure
Hint: 2 and 4
Superior and inferior opthalmic veins Oculomotor nerve [III] Abducens nerve [VI] Opthalmic nerve [V1] Trochlear nerve [IV]
What branches of the opthalmic nerve pass through the inferior orbital fissure?
Lacrimal, frontal and nasocilliary
How many layers can it be said the eye has? What are they?
3; outer fibrous layer, middle vascular layer and inner layer
What strucutres comprise the outer fibrous layer of the eye?
Hint: 2
Cornea
Sclera
What structures comprise the middle vascular layer of the eye?
Hint: 3
Iris
Ciliary Body
Choroid
What is the choroid of the eye?
A vascular layer of connective tissue providing the nutrients ot the rest of the eye