BIOD 171 MODULE 3 ESSENTIAL
MICROBIOLOGY FINAL PAPER QUESTIONS
ANSWERS COMPLETE SOLUTION VIEW
AHEAD SUCCESS STRATEGY
●● the posterior portion of the outer fibrous layer of the eye is called the
____
Answer: sclera
●● what portion of the eye supplies blood supply to the outer layers of
the eye?
Answer: choroid (of the middle layer)
●● true or false: the more numerous type of photoreceptors are rods
Answer: true
●● what is the correct order of how light passes through the eye?
Answer: cornea, lens, vitreous fluid, retina
●● A patient had a CVA in the area indicated by the red x in the figure,
below. What type of blindness is the patient most likely to incur?
Explain your reasoning.
Answer: Bilateral left visual field blindness.
, The right optic tract is damaged. All the sensory information from the
left visual fields travels together after the optic chiasm to the right side
of the brain.
●● A patient has a brain tumor in the area indicated by the red x in the
figure, below. What type of blindness is the patient most likely to incur?
Explain your reasoning.
Answer: Left eye blindness because there is damage to the left optic
nerve. Information from the left visual field has not yet crossed at the
optic chiasm. Both peripheral and nasal fields of the left eye would be
missing.
●● True or False: All sensory information from the optic nerves cross at
the optic chiasm.
Answer: F
●● The ________ is controlled by the trochlear nerve.
Answer: Superior oblique
●● Your elderly patient is discussing her vision problems. She describes
her vision as blurry. Following a visual examination, her left eye
deviates medially when looking straight ahead. What is most likely
causing the vision problem? Explain your reasoning.
Answer: The abducens nerve controls the lateral rectus. Damage to the
lateral rectus would cause there to be a muscle imbalance, and the
MICROBIOLOGY FINAL PAPER QUESTIONS
ANSWERS COMPLETE SOLUTION VIEW
AHEAD SUCCESS STRATEGY
●● the posterior portion of the outer fibrous layer of the eye is called the
____
Answer: sclera
●● what portion of the eye supplies blood supply to the outer layers of
the eye?
Answer: choroid (of the middle layer)
●● true or false: the more numerous type of photoreceptors are rods
Answer: true
●● what is the correct order of how light passes through the eye?
Answer: cornea, lens, vitreous fluid, retina
●● A patient had a CVA in the area indicated by the red x in the figure,
below. What type of blindness is the patient most likely to incur?
Explain your reasoning.
Answer: Bilateral left visual field blindness.
, The right optic tract is damaged. All the sensory information from the
left visual fields travels together after the optic chiasm to the right side
of the brain.
●● A patient has a brain tumor in the area indicated by the red x in the
figure, below. What type of blindness is the patient most likely to incur?
Explain your reasoning.
Answer: Left eye blindness because there is damage to the left optic
nerve. Information from the left visual field has not yet crossed at the
optic chiasm. Both peripheral and nasal fields of the left eye would be
missing.
●● True or False: All sensory information from the optic nerves cross at
the optic chiasm.
Answer: F
●● The ________ is controlled by the trochlear nerve.
Answer: Superior oblique
●● Your elderly patient is discussing her vision problems. She describes
her vision as blurry. Following a visual examination, her left eye
deviates medially when looking straight ahead. What is most likely
causing the vision problem? Explain your reasoning.
Answer: The abducens nerve controls the lateral rectus. Damage to the
lateral rectus would cause there to be a muscle imbalance, and the
