The ureterovesical junction and the musculature of the dorsal wall of the urinary bladder.
D000368:Aged; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009130:Muscle, Smooth / Q000033:anatomy & histology*; D013194:Staining and Labeling; D014513:Ureter / Q000033:anatomy & histology*; D014521:Urethra / Q000033:anatomy & histology; D001743:Urinary Bladder / Q000033:anatomy & histology*