Figure 1
From: Sexual dimorphism of detrusor function demonstrated by urodynamic studies in rhesus macaques
Reflex micturition is evoked in both male and female rhesus macaques and demonstrated by urodynamic studies. Filling cystometry and pressure flow studies result in characteristic bladder pressure recordings. Following emptying of the bladder, saline is infused to raise bladder pressure about 25 cmH2O above baseline. Both the male and female recordings show a gradual increase in bladder pressure during the filling phase, followed by a delayed voiding phase. A representative trace is presented from a male (blue) and female (red) subject. The onset and end of the bladder filling is indicated by arrow heads, the onset of voiding by an arrow, and peak bladder pressure by an asterisk for each subject. Note that the bladder pressure at onset of voiding and the peak bladder pressure are markedly higher in the male compared to the female subject.
