Study Guide for dental students and dentists

This is a comprehensive study guide for dental students and dentists. On this site you will Histology of the Human Eye for UCLA Dental Students. In addition there is a comprehensive study guide for the Systemic Pathology.

About Mission for Vision

Sunday, February 26, 2006

Sample Test for Dental students

Here are some sample test questions to help you understand the depth to which you will be examined. Click on what you think is the right answer to confirm. If you think this test is too simple or too difficult let me know by email.

1. Which of the following is least true of the boney walls that surround the eye?
a. the frontal bone forms a portion of the orbital roof
b. the ethmoid bone is thin and prone to sinus infection
c. the lacrimal gland lies in a fossa of the lacrimal bone
d. the floor of the orbit is prone to fracture from trauma
e. the zygomatic bone forms part of the lateral wall of the orbit

2. Which structure is most correctly listed with their functions?
a. lacrimal gland- responsible for secreting lipid to cover the tear film
b. goblet cell- secrete copious amounts of aqueous for the tear film
c. Meibomian gland- secrete mucins to lubricate the eye
d. Gland of Kraus- secrete proteins to prevent infection
e. levator muscle- responsible for closing the eyelds

3. A patient had complications from a recent operation that was performed so he would not need glasses (a LASIK procedure). However, there was a complication and the cornea was made too thin by the laser. During the procedure a laser obliterates tissue from the center of the cornea after a flap is made to peel back the anterior portion (100 microns) of the cornea (normally about 500 microns in central thickness). Given the patient had normal corneal anatomy prior to the operation and knowing the patient's cornea did not rupture, the complication was likely due to overzealous treatment of the:
a. epithelium
b. Bowman's layer
c. epithelial basement membrane
d. stroma
e. Descemet's membrane
f. endothelium

4. Which of the following is least likely to be traversed by a photon traveling to initiate a visual response in the brain?
a. lens nucleus
b. ganglion cell
c. Bowman's layer
d. Bruch's membrane
e. vitreous
f. aqueous

5. A patient has glaucoma because aqueous outflow is slow. A structure adjacent to or connected to the normal pathway has impeded the flow. The LEAST likely cause of the obstruction of aqueous based on anatomic considerations:
a. the peripheral iris became adherent to the cornea.
b. the ciliary body rotated and pushed the lens against the iris.
c. flow across Bruch's membrane was impeded by adjacent abnormal retinal pigment epithelium
d. flow thru the aqueous veins was diminshed by a tumor

6. The cell with the longest axon is the:
a. ganglion cell
b. Muller cell
c. cone
d. rod
e. amacrine cell

7. The vitreous is most firmly attached at the:
a. optic nerve (Bergmeister's papilla)
b. ora serrata (vitreous base)
c. lens (posterior capsule)
d. pars plicata (ciliary processes)

8. The structure in which nuclei are most abundant in the normal adult:
a. anterior lens capsule
b. posterior lens capsule
c. lens nucleus
d. lens equator

9. The structures shown at the tips of the arrows in the photomicrograph function mainly to
a. modulate fluid (aqueous) transfer
b. regulate an aperature
c. control focus (accommodation)
d. provide structural support

10. Based on the normal anatomy the structure least susceptible to injury from a fist blow to the orbit and eye is the:
a. iris root
b. sclera over the rectus muscle insertions
c. nerves of the inferior orbital fissure
d. intracanalicular portion of the optic nerve


Post a Comment

<< Home