BIOD 152 EXAM 3 QUESTIONS AND
ANSWERS GRADED A+ 2025/2026
What sense does not have specialized sense organs? - ANS Touch
What senses contain specialized receptor cells via specialized somatic and visceral
afferents? - ANS A&C (Smell and Equilibrium)
The posterior portion of the outer fibrous layer of the eye is called - ANS Sclera
The outer fibrous layer of the eye includes the: - ANS Sclera and cornea
What portion of the eye supplies blood supply to the other layers of the eye? - ANS Choroid
(the middle layer)
True or false: Cones operate best in dim light - ANS False
True or false: The more numerous type of photoreceptors are rods? - ANS True
What is the correct order of how light passes through the eye? - ANS Cornea, aqueous
humor, lens, retina
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, A patient had CVA in the area indicated by the red X in the figure, below. What type of blindness
is the patients most likely to incur. Explain - ANS 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. - ANS 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.
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. - ANS Left LGN. All 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. - ANS Right Optic nerve. Information from the right
visual field has not yet crosses at the optic chiasm. Both peripheral and nasal fields of the right
eye would be missing.
T or F. The lateral fibers of the optic nerves cross at the optic chiasm. - ANS False
True or False. All sensory information from the optic nerves cross at the optic chiasm. -
ANS False
The ________ is controlled by the trochlear nerve. - ANS Superior Oblique
The____ is controlled by the abducens nerve. - ANS Lateral Rectus
Your elderly patient is discussing her vision problems. She describes her vision as cloudy and
dark. Her vision has progressively worsened over the last year. What most likely is causing the
vision problem? - ANS Cataracts, due to lens that slowly become hardened over
time. Light is not able to be refracted onto the retina.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
ANSWERS GRADED A+ 2025/2026
What sense does not have specialized sense organs? - ANS Touch
What senses contain specialized receptor cells via specialized somatic and visceral
afferents? - ANS A&C (Smell and Equilibrium)
The posterior portion of the outer fibrous layer of the eye is called - ANS Sclera
The outer fibrous layer of the eye includes the: - ANS Sclera and cornea
What portion of the eye supplies blood supply to the other layers of the eye? - ANS Choroid
(the middle layer)
True or false: Cones operate best in dim light - ANS False
True or false: The more numerous type of photoreceptors are rods? - ANS True
What is the correct order of how light passes through the eye? - ANS Cornea, aqueous
humor, lens, retina
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, A patient had CVA in the area indicated by the red X in the figure, below. What type of blindness
is the patients most likely to incur. Explain - ANS 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. - ANS 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.
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. - ANS Left LGN. All 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. - ANS Right Optic nerve. Information from the right
visual field has not yet crosses at the optic chiasm. Both peripheral and nasal fields of the right
eye would be missing.
T or F. The lateral fibers of the optic nerves cross at the optic chiasm. - ANS False
True or False. All sensory information from the optic nerves cross at the optic chiasm. -
ANS False
The ________ is controlled by the trochlear nerve. - ANS Superior Oblique
The____ is controlled by the abducens nerve. - ANS Lateral Rectus
Your elderly patient is discussing her vision problems. She describes her vision as cloudy and
dark. Her vision has progressively worsened over the last year. What most likely is causing the
vision problem? - ANS Cataracts, due to lens that slowly become hardened over
time. Light is not able to be refracted onto the retina.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
