BIOD 152 Exam 3
By ExamNavigator
, BIOD 152 Exam 3
1. What sense does not have specialized sense organs?
Answer: Touch
2. What senses contain specialized receptor cells via specialized somatic andvisceral
afferents?
Answer: A&C (Smell and Equilibrium)
3. The posterior portion of the outer fibrous layer of the eye is called
Answer: Sclera
4. The outer fibrous layer of the eye includes the:
Answer: Sclera and cornea
5. What portion of the eye supplies blood supply to the other layers of theeye?
Answer: Choroid (the middle layer)
6. True or false: Cones operate best in dim light
Answer: False
7. True or false: The more numerous type of photoreceptors are rods?
Answer: True
8. What is the correct order of how light passes through the eye?
Answer: Cornea,aqueous humor, lens, retina
9. 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
Answer: Bilateral leftvisual 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.
10. 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 yourreasoning.
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.
11. 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: Left LGN. All the sensory information from the right visual fields travels together
after the optic chiasm to the left side of the brain.
By ExamNavigator
, BIOD 152 Exam 3
1. What sense does not have specialized sense organs?
Answer: Touch
2. What senses contain specialized receptor cells via specialized somatic andvisceral
afferents?
Answer: A&C (Smell and Equilibrium)
3. The posterior portion of the outer fibrous layer of the eye is called
Answer: Sclera
4. The outer fibrous layer of the eye includes the:
Answer: Sclera and cornea
5. What portion of the eye supplies blood supply to the other layers of theeye?
Answer: Choroid (the middle layer)
6. True or false: Cones operate best in dim light
Answer: False
7. True or false: The more numerous type of photoreceptors are rods?
Answer: True
8. What is the correct order of how light passes through the eye?
Answer: Cornea,aqueous humor, lens, retina
9. 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
Answer: Bilateral leftvisual 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.
10. 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 yourreasoning.
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.
11. 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: Left LGN. All the sensory information from the right visual fields travels together
after the optic chiasm to the left side of the brain.
