This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lower Extremity, Subject name: Anatomy
Root Value of Pudendal Nerve is: 
Select and explain. 
A. S1S2S3, B. S2S3S4, C. S3S4S5, D. L5S1S2
B: S2S3S4
Answer: B: S2S3S4 
Explanation: Ans. B. S2 S3 S4 The pudendal nerve (Root Value S2 S3 S4 ) is the main nerve of the perineum. It carries sensation from the external genitalia of both sexes and the skin around the anus and perineum, as well the motor supply to various pelvic muscles, including the male or female external urethral sphincter and the external anal sphincter. If damaged, most commonly by childbirth, lesions may cause sensory loss or fecal incontinence.