Orbit and the Eye Flashcards
Identify the bones in the bony orbit
Identify features of the bony orbit
What is the apex of the bony orbit?
Optic canal
What are the sides of the orbital rim?
Superior, inferior, medial and lateral orbital margins
What kind of fracture can affect the medial wall and orbital floor?
Orbital blowout fracture
Which muscle forms the external layer of the eyelid?
Orbicularis oculi
What are the parts of the orbicularis oculi?
Orbital and palpebral
What are tarsal glands embedded in tarsi responsible for?
Lipid secretion
The iris is covered by conjunctiva/cornea and the sclera and lower eyelid is covered by conjunctiva/cornea
Cornea
Conjunctiva
What is the junction between cornea and sclera better known as?
The limbus
Outline the path of lacrimal fluid in the eye
Produced by lacrimal gland before washing over eye and being pushed toward the medial angle. Drain through lacrimal punctae before reaching inferior meatus
Which nerve provides parasympathetic innervation to the lacrimal gland?
CN VII (facial)
What are the three layers of the eye?
Fibrous
Uvea (vascular layer)
Retina (photosensitive)
What are the two parts of the fibrous layer?
Sclera and cornea
What are the three parts of the uvea?
Iris
Ciliary body
Choroid