Posted by esb on October 10, 2011 at 23:11:17:
In Reply to: Orbit and Globe - Part II posted by lae2 on October 10, 2011 at 14:22:34:
: Orbit and Globe - Learning Objectives and Review Questions
: True/False
: True/False - October 08, 2011 - Dr. Quillen
: 17. The primary sensory cell bodies that mediate the afferent limb of the blink reflex are located in the nodose ganglion.
F - trigeminal?
: 18. The ciliary muscle pulls on the zonule fibers and, thus, allows the lens to thicken and provides accommodation.
F - contraction of the ciliary muscle loosens the zonule fibers, allowing the lens to thicken
: 19. The central retinal artery provides the arterial supply to the lens.
F - this is supplied in embryonic development by the hyaloid artery, which degenerates after the lens develops. The remaining proximal stub (which does not go to the lens) is the central retinal artery.
: 20. A lesion of the superior division of the oculomotor causes a failure to accommodate.
F - inferior?
: 21. The vitreous makes up about 80% (4/5) of the volume of the eye.
T
: 22. The optic disc is the region of the retina having the highest visual acuity.
F - blind spot
: 23. The macula of the retina is devoid of receptors and is responsible of the blind spot of the visual field.
F - this would describe the optic disc
: 24. The foveal avascular zone enhances the acuity of foveal vision because larger vessels are not present.
T?
: 25. Approximately 1.2 million nerve fibers make up the SSA component of the optic nerve.
T