Exam 6: Sensors I: Remote Sensing

Give 5 examples of sensory modalities that other organisms possess that humans do not. _________________ _________________ _________________ _________________ _________________

Which of the following is true of photoreceptors in the retina?

Construct a diagram of a rod photoreceptor synapsing with a rod bipolar cell that accounts for how a light stimulus ultimately results in the release of neurotransmitter in bipolar cells, despite the fact that photoreceptors are hyperpolarized by light.

Imagine you are a scientist studying creatures that live in caves. Propose what types of sensory modalities that would be advantageous for animals that live in caves or similar environments and justify your answer. What types of senses would not be needed?

Construct a table, with "color vision/cones" on one side and "monochromatic vision/rods" on the other. Write down anatomical or functional features of the visual system associated with each heading.

Analyze figure 6.6. In the text Which is true of this figure?

Which of the following is true regarding color vision in humans?

You are studying a cell, and find that an action potential crosses the cells body and continues along the axon. This cell is most likely a

The process of converting an external signal to a neural signal is called _______________________.

Consider the auditory system. Place the following structures in order based on the sequence that they are involved in auditory transduction. ____ cochlea ____ oval window ____ stapes ____ malleus ____ pinna ____ tympanic membrane

You have learned about somatotopic, tonotopic, and chemotopic mapping in the brain. Compose a short description of these ideas, and tell how these organizational schemes are similar and different from each other.

Which of the following is an accurate statement regarding color vision?

Consider figure 6.3 In the text and perform the exercise. Why does the tip of the pencil seem to disappear?

What factors facilitate a dog's enhanced sense of smell (as compared with humans)?

Place the following events in the order they occur in the phototransduction cascade. ____ Light interacts with a molecule of retinal causing isomerization ____ Transducin is activated ____ An opsin molecule is activated ____ Phosphodiesterases are activated ____ cGMP is degraded ____ the photoreceptor hyperpolarizes ____ cyclic nucleotide-gated channels close ____ the amount of neurotransmitter released decreases

Which of the following is true about vision in dim light situations?

Analyze figure 6.11 and the text dealing with retinoid recycling and the light path through the retina. What arguments does the author present that might argue against the idea that the retina is suboptimal in its design because of its "backward" arraignment?

Analyze figure 6.24. In the text Outline the evidence that there are mechanically-gated ion channels in stereocilia that are responsible for sensory transduction in the cochlea.

Analyze figure 6.25. In the text What if NBQX had NOT caused the disappearance of EPSCs?

Which of the following is NOT associated with mucus in the olfactory epithelium?