Sensory Systems Review Questions

1. There are four different kinds of receptors: chemoreceptors, mechanoreceptors, photoreceptors, and thermoreceptors. Which of these functions in taste? Which functions in smell (olfaction)? Which functions in vision? Which functions in hearing? Which functions in balance? Which functions in touch?
2. Where are olfactory receptors located?
3. What kind of receptors are among the most primitive kind?
4. What kinds of animals have chemoreceptors?
5. Where are chemoreceptors found in the following kinds of animals?

   Humans

   Planarians

   Insects and other arthropods

6. Name the kinds of animals that have camera-type eyes.
7. Tell what an ocellus is and explain why it cannot be used to form images.
8. Describe a compound eye.
9. Draw and label a vertebrate eye. Include these structures: sclera, choroid, retina, optic nerve, lens, iris, cornea, ciliary body, suspensory ligament, aqueous humor, and vitreous humor.
10. Name the organ that contains the semicircular canals.
11. State the function of the semicircular canals.
12. What is the fovea?
13. Another word for focusing the eye is ______.
14. State the function of the iris.
15. The lateral line system of fish allows the animal to receive what type of stimulus?
16. State the function of each of the following: semicircular canals, otoliths, saccule and utricle, and vestibule.
17. State the function of the organ of Corti and describe its function.
18. Name the part of the eye that provides the most acute color vision.
19. Why do vertebrate ears have three semicircular canals, that is, why not have just one?
20. Name the four classes of taste that taste buds respond to.
21. List the structures that sound waves would pass through as one goes from the outer part of the ear to the inner part where receptors are stimulated. These structures should be listed in order.
22. Name the receptors that produce color vision. Name the receptors that produce black and white vision.