This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Anatomy
Pain in early labor is limited to dermatomes 
Select and explain. 
A. T10 - L1, B. S1- S3, C. L4- L5, D. L2- L3
A: T10 - L1
Answer: A: T10 - L1 
Explanation: In early stages of labor pain is mainly uterine in origin . Distributed along the cutaneous nerve distribution T10 - L1 In later stages pain is due to dilatation of cervix referred to back through sacral plexus