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: Gynaecology & Obstetrics
Contraction of uterine pain is carried by 
Select and explain. 
A. L 1,2,3, B. T 12, L 1,2,3, C. T 10,11,12 L 1, D. L 3,4,5 S 1,2
C: T 10,11,12 L 1
Answer: C: T 10,11,12 L 1 
Explanation: In the early stages of labour pains are mainly uterine in origin because of painful uterine contractions It is distributed along the cutaneous nerve distribution of T10 - L 1. In the later stages pain is due to cervical dilatation This pain is referred to back through sacral plexus. Ref: Dutta Obs 9e pg 112.