1. What are the five special senses?
The five special senses vision, smell, taste, hearing, and equilibrium (balance)
2. What are the two parts of the outer layer of the eye?
Cornea and sclera
3. What is included in the middle layer of the eye?
The middle layer of the eye includes choroid, the ciliary muscle, and the iris.
4. The pupil is a hole in the __center of the iris__.
5. The inner sensory layer is the __retina___.
6. What are the two types of photoreceptors and their functions?
The more numerous cells are rods, which are stimulated in dim light. Rods are more
sensitive to light but do not generate sharp or color images. The cones operate in
bright light, helping to generate sharp color images.
7. The interior of the eye (posterior to the lens) is filled with __vitreous fluid___.
8. True or False: The vision pathway begins as the optic tracts, crosses at the optic
chiasm and then moves through the optic nerve.
False, Photoreceptors in the retina send a signal through the optic nerve on to
the optic chiasm, located at the base of the hypothalamus. The medial fibers of
the optic nerve cross to the other side when they reach the optic chiasm where
the optic tracts are formed.
9. Where is the LGN located? Thalamus
10. False: The nasal visual field is the visual field on the lateral sides of each eye.
False
11. What allows for 3-D vision?
Overlapping information in the nasal visual fields allows for 3-D vision, called
the binocular visual field.
12. True or false: Only the medial fibers cross at the optic chiasm.
13. The left side of the brain receives information from the ___medial
side ______ of the left eye and the ____lateral side ____ of the right eye.
, 14. On a piece of paper, draw the visual pathway using two different colors.
Note one comment below about what you learned about the vision pathway:
15.The medial rectus turns the eye __medially___. The medial rectus is
controlled by CN _3 the oculomotor nerve____.
The five special senses vision, smell, taste, hearing, and equilibrium (balance)
2. What are the two parts of the outer layer of the eye?
Cornea and sclera
3. What is included in the middle layer of the eye?
The middle layer of the eye includes choroid, the ciliary muscle, and the iris.
4. The pupil is a hole in the __center of the iris__.
5. The inner sensory layer is the __retina___.
6. What are the two types of photoreceptors and their functions?
The more numerous cells are rods, which are stimulated in dim light. Rods are more
sensitive to light but do not generate sharp or color images. The cones operate in
bright light, helping to generate sharp color images.
7. The interior of the eye (posterior to the lens) is filled with __vitreous fluid___.
8. True or False: The vision pathway begins as the optic tracts, crosses at the optic
chiasm and then moves through the optic nerve.
False, Photoreceptors in the retina send a signal through the optic nerve on to
the optic chiasm, located at the base of the hypothalamus. The medial fibers of
the optic nerve cross to the other side when they reach the optic chiasm where
the optic tracts are formed.
9. Where is the LGN located? Thalamus
10. False: The nasal visual field is the visual field on the lateral sides of each eye.
False
11. What allows for 3-D vision?
Overlapping information in the nasal visual fields allows for 3-D vision, called
the binocular visual field.
12. True or false: Only the medial fibers cross at the optic chiasm.
13. The left side of the brain receives information from the ___medial
side ______ of the left eye and the ____lateral side ____ of the right eye.
, 14. On a piece of paper, draw the visual pathway using two different colors.
Note one comment below about what you learned about the vision pathway:
15.The medial rectus turns the eye __medially___. The medial rectus is
controlled by CN _3 the oculomotor nerve____.
