Answer Happy

Q4. The last question has to do with our lectures on vision and sleep. (15 points) 4A. The following questions refer to this figure of the three main retinal layers (labeled as A, B, C): B C Light Match th description to the BEST answer. Each letter may be used twice. 2 pts each. 1. Layer that contains bipolar cells: A B C 2. A B C The layer of the retina with the most number of cells (hint: think about convergence!): Over most of the retina, light hits this layer first (i.e., except in the fovea): 3. A B C A B C 4. The only layer in the retina where action potentials are initiated: 5. The only layer in the retina where light is transduced into an electrical signals: A B C 4B. During class, we also discussed the role of another type of retinal ganglion cell called melanopsin. Melanopsin is proposed to have an important role in sleep. Briefly explain how melanopsin regulates sleep. For full credit, you must include and define in your explanation each of the following terms: melanopsin, SCN, pineal gland, melatonin, entrainment. (5 points) Optional extra credit question (5 points): ● How is blue light from electronics suggested to impact the process you described in Question 4B, and how does this impact sleep? You must get both Question 4B and this question correct for extra credit points.