This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Special Senses, Subject name: Physiology
Which of the following nuclei is involved in both light reflex and accomodation reflex? 
Select and explain. 
A. Pretectal nucleus, B. Edinger - Westphal nucleus, C. Suprachiasmatic nucleus, D. Supraoptic nucleus
B: Edinger - Westphal nucleus
Answer: B: Edinger - Westphal nucleus 
Explanation: Explanation: - Pupillary light reflex: Visual pathway - pretectal nucleus - Edinger Westphal nucleus - constriction of the pupil. NOTE: Pretectal nucleus is connected to E-W nucleus bilaterally, causing contralateral pupil to also constrict (indirect light reflex). Accommodation reaction: Visual pathway - visual coex (blurred image of a near object) - E-W nucleus - changes of accommodation.