BIOD 152 Module 3 Exam
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BIOD 152 Module 3 Exam
- what sense does not have specialized sense organs?
Answer: touch
- the outer fibrous layer of the eye includes the
Answer: sclera and cornea
- which portion of the eye supplies blood supply to other areas of the eye?
Answer: -choroid (of the middle layer)
4. true or false: the more numerous type of photoreceptors are rods
Answer: true
- what is the correct order of how light travels through the eye?
Answer: cornea, lens, vitreous fluid, retina
- a patient is found to have blindness of the right visual field of both eyes. what part of the
vision pathway was most likely damaged? explain your answer
Answer:
-The Left LGN -all of the sensory information from the right visual fields travels together after the optic chiasm to the left side of the brain
- a patient is found to have blindness in the right eye. what part of the vision pathway was
most likely damaged? explain your response
Answer:
-the right optic nerve -information from the right visual field has not yet crossed at the optic chiasm. both peripheral and nasal fields of the right eye would be missing
- true or false: the lateral fibers of the optic nerve cross at the optic chiasm-
Answer: false
- the is controlled by the abducens nerve
Answer: lateral rectus
- Your elderly patient is discussing her vision problems. She describes her vision as blurry.
Her left eye deviates medially when looking straight ahead. what is most likely causing the vision problem?
Answer:
-abducens nerve -the abducens nerve controls the lateral rectus. damage would cause a muscle imbalance. the
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