Berkeley Study Guide Flashcards
What is the most anterior structure of the Uvea?
Iris
Which chamber does the lens reside?
Posterior chamber
What does the term “Sclerad” or “Vitread” mean?
Towards the Sclera or Vitreous
Which layer do Dellen occur?
Stroma
What is the major difference between a corneal topographer vs. keratometer?
Keratometer measure 3 to 4 mm of the anterior corneal surface and asses “reflected” pattern
Corneal topographer maps corneal surface and gives indication of curvatures at selected points
What is the definition of a holocrine cell?
WHOLE cell is secreted
What is the definition of a apocrine cell?
PART of the cell secreted
Which muscle on the face is known to cause a frowning look?
Corrugator
What muscle is known to create a look of concentration?
Procerus
What sheath is pierced when CN3 reaches the Cavernous Sinus?
Dura matter
What is the thinnest and longest CN?
CN 4
Whats is the largest CN?
CN 5
Sympathetic first order neuron seperates at what area of the spinal cord?
C8 and T3
Which bones construct the Lateral Orbital Margin?
Zygomatic and Frontal
Walls: Greater wing of the Sphenoid and Zygomatic
Which bones construct the Medial Orbital Margin?
Frontal, Maxilla, Lacrimal
Walls: Sphenoid, Maxilla, Ethmoid and Lacrimal
Spontaneous Blinking is done by what part of the Orbiculis Oculi?
Palpebral portion
Which bacteriostatic agent is in tear film?
Lyzosome
How thick is the tear film?
30um
VOR is conducted at which part of the bony labrinth of the ear?
Semi-circular canal
Where are the melanocytes located near the limbus?
Basal layer
Which layers of the cornea, do not regenerate?
Endothelium and Bowman’s
Which layer of the lens are the crystallins located?
Lens cortex
Which part of the body has the highest concentration of protein?
Lens
Most common type of congenital cataract?
Zonulae Lamellar
Which layer is the sclera derived from during development?
Mesoderm
What is the most common cell found in iris?
Fibroblast cell
What is the canal of hanover?
space between zonular fibers
What type of collagen is in the vitreous?
Type 2
What is the function of Muller cells?
Regulate GABA, Glutamate and K+ concentration
Whats the resting potential for PR?
-40mV to -70mV
What are the 2 inihibitory neurotransmitters in the retina?
GABA and Glycine
What type of defect will be noticed in a pt with an acquire Retinoschsis?
Absolute
Which layers does Cystoid Macular Edema occur in?
OPL and INL
After what corneal thickness does a pt have a high chance of POAG?
<555um
What has the highest concentration in the Aqueous?
Bicarbonate, Lactate, Ascorbate or Pyruvate?
Bicarb > Lactate > Pyruvate > Ascorbate
Why is Betaxolol considered Cardioselective?
Studies have shown that Betaxolol vs. Atenolol or Propanolol will cause Myocardial Acidosis more so that
CN 12 impacts the tongue on which side?
Ipsilateral
CN 10 impacts the uvula on which side?
Contralateral