Table 3: Perianal reflexes

Name Technique and reaction Responsible spinal level
Bulbo-cavernosus reflex   Squeeze the glans penis
- contraction of muscle between scrotum and anal sphincter
S2/3
Bulbo-anal reflex Squeeze the glans penis
- contraction of anal sphincter
S3/4
Anal reflex Stroke skin adjacent to anus
- contraction of anal sphincter
S4/5