46. Sensory Systems

Difficulty in distinguishing red from green is most likely due to a defect in which cells?

A human born with nonfunctional rhodopsin would __________.

Which of the following occurs when you move from a bright area into a darkened room?

Which of the following choices is the correct order of the neural pathways that light travels after hitting the retina?

Correct focusing of the image on the retina in humans is achieved by changing the __________.

The body uses the vitamin A precursors from some foods to make a substance called retinal, which __________.

When you move an object from 15 inches in front of your eyes to 10 inches in front of your eyes, the lenses __________.

The greatest concentration of cone receptors is found at the __________.

Some sensory processing occurs within the retina of the vertebrate eye. In one type of retinal processing, a horizontal cell that receives input from a stimulated rod or cone then inhibits surrounding photoreceptors and bipolar cells. This type of processing is called __________.

Incapacitating the muscles of a mammalian eye would result in an inability __________.

A baby is born with the normal number and distribution of rods but no cones. What would we expect the baby to be?

Which of the following statements is correct?

Taste and smell are two distinct senses in animals living in terrestrial environments. Animals living in aquatic environments, however, have no distinction between taste and smell. Which response might explain this difference?

Which sensory receptor—category pair is correct?(A)hair cell—nociceptor(B)snake pit organ—mechanoreceptor(C)taste receptor—chemoreceptor(D)olfactory receptor—electromagnetic receptor

Which of the following sensory receptors is incorrectly paired with its category?a. hair cell—mechanoreceptorb. snake pit organ—thermoreceptorc. taste receptor—chemoreceptord. olfactory receptor—electromagnetic receptor