Distention of the rectum, sigmoid colon and bladder as a source of headache in intact human subjects.
D034841:Abdominal Cavity; D003106:Colon; D012809:Colon, Sigmoid; D006261:Headache; D006801:Humans; D012007:Rectum; D001743:Urinary Bladder
BLADDER; COLON; HEADACHE; RECTUM