Exam 44: Sensory Systems

Which of the following do humans NOT have taste buds specialized to sense?

Beta-N-Methylamino-L-Alanine, or BMAA, is a glutamate receptor agonist produced by cyanobacteria.Since Glu is an excitatory neurotransmitter, it is not surprising that BMAA is associated with neurological damage.Buildup of BMAA in fruit bats was hypothesized to cause neurodegenerative disease in islanders that fed on the bats.A recent study found high levels of BMAA in sharks, suggesting that consumption of shark fin soup is also dangerous.The researchers suggested that a secondary effect of BMAA may actually make these hazardous foods surprisingly desirable.What might this be?

When membrane proteins on an olfactory neuron are stimulated by the binding of a specific chemical, what is the immediate result?

The simplest sensory receptors are __________ that respond to mechanical distortion, changes in temperature, or specific chemicals.

Each type of cone cell is stimulated by a different color of light.In humans, a colorful scene is perceived as a combination of signals from three cone types.Which colors correspond to these three cones? I-Red II-Yellow III-Orange IV-Blue V-Green VI-Purple

Where is the visual image in focus for a nearsighted individual?

Which of the following structures is found in a human eye, but NOT in an octopus eye?

All of the varied sensations we experience are due to which three categories of sensory receptors?

Which of the following cells are NOT found in the retina?

Color blindness is caused by heritable mutations in cone photoreceptors.How many cone types does the retina of a colorblind individual typically contain?

What is the photopigment in rod cells called?

What statement best summarizes the evolutionary history of eyes?

When a cone cell is stimulated by light, what will occur at the cell membrane?

What are the receptors called that transmit impulses that are perceived by the brain as pain?

What are the categories of taste sensation?

What sensory receptors sense stimuli that arise from within the body?

The human retina is composed of three cell layers.Which represents the correct order of these layers, starting with the layer that is closest to the iris?

In "The Disembodied Lady", neurologist Oliver Sacks tells the story of a patient who suffered a catastrophic loss of sensory function.She said, "I feel my body is blind and deaf to itself...It has no sense of itself." The patient's nerve damage was strikingly specific.What single type of neuron most likely suffered damage?

Which is NOT a stimulus that exteroceptors can sense?

Which of the following statements about the lateral line system is NOT correct?