You next turn your attention to the electric-type Pokemon called Pikachu. In addition to being able to generate bursts of electricity, Pikachu can see locations of high voltage (such as power lines) due to the ultraviolet (UV) light emitted by such structures. Given that ultraviolet light is around 200 nm, which of the following statements is most likely to be true about the cells in Pikachu's retina? You can assume that the overall structure of the visual system is similar to other mammals. Oa. The retina will not contain cones Detection of UV light will trigger action potentials in bipolar cells Oc. There is a photoreceptor containing an opsin that is sensitive to the wavelengths around 200 nm o d. Detection of UV light will depolarize photoreceptors

You next turn your attention to the electric-type Pokemon called Pikachu. In addition to being able to generate bursts of electricity, Pikachu can see locations of high voltage (such as power lines) due to the ultraviolet (UV) light emitted by such structures. Given that ultraviolet light is around 200 nm, which of the following statements is most likely to be true about the cells in Pikachu's retina? You can assume that the overall structure of the visual system is similar to other mammals. Oa. The retina will not contain cones Detection of UV light will trigger action potentials in bipolar cells Oc. There is a photoreceptor containing an opsin that is sensitive to the wavelengths around 200 nm o d. Detection of UV light will depolarize photoreceptors

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter6: The Peripheral Nervous System: Afferent Division; Special Senses

Section: Chapter Questions

Problem 13RE

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When a person blinks, the part of the brain that interprets visual stimulation is suppressed. The spontaneous act of blinking is controlled by the area of the brain that controls involuntary movements such as breathing and blood pressure. To determine whether the lack of light or the act of blinking causes the suppression, scientists had subjects close their eyes and then placed a bright flashing light in their mouth to stimulate the photoreceptors in the eyes through the palate. Visual stimulation was still suppressed. So the photoreceptors in the retina were not stimulated even though they were exposed to light. This study demonstrated that when a person blinks, it is the act of blinking and not the absence of light that causes the suppression of visual stimulation. In the diagram above, identify the part of the brain that is suppressed during blinking and the part of the brain that controls involuntary, spontaneous blinking. Select one: a. 3 and 8 b. 2 and 9 c. 5 and 6 d. 1…
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Which part of the human eye conveys the electrical signals generated by the light sensitive cells of the retina, on the brain?
Events in Visual Perception Potassium channels open. Potassium ions move out of the neuron. Some sodium channels open in the neuronal membrane of the dendrite. All ion channels close and the Na+/K+ exchange pump starts working. Some sodium ions diffuse into the neuron membrane of the dendrite. Lights hit the retina. The threshold level is reached at the neuronal membrane of the dendrite. The remaining sodium channels open. Sodium ions move into the neuron. List, in order, the events in visual perception that must occur for a person to see an object:
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