This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Nociceptive signals are transmitted primarily to which of the following? 
Select and explain. 
A. Nucleus caudalis, B. Limbic system, C. Reticular system, D. Superior cervical ganglion
A: Nucleus caudalis
Answer: A: Nucleus caudalis 
Explanation: Trigeminal Nucleus caudalis is an important site for processing orofacial nociceptive input. After activation of C and A delta fibres, they transmit nociceptive signals primarily via trigeminal nerves to Trigeminal Nucleus caudalis. It is also called as medullary dorsal horn as it has similar anatomical resemblance to spinal dorsal horn.