Figure 3
From: Sexual dimorphism of detrusor function demonstrated by urodynamic studies in rhesus macaques

Reflex micturition shows sexual dimorphism in rhesus macaques. Partial filling of the bladder was followed by assessments for delayed reflex micturition and voiding in male (n = 16) and female (n = 22) rhesus macaques. The micturition reflex was activated in 100% (16/16) of male and 90.9% (20/22) of female subjects. No voiding (NV) with absence of reflex detrusor contractions was shown in 2 female subjects. Non-voiding contractions (NVC) with bladder pressure elevation were present in 1 female subject. Detection of NVC was present in 43.8% (7/16) of the male subjects. Voiding (V) was present in a significantly lower proportion of 56.2% (9/16) of the male subjects compared to 86.4% (19/22) of the females (p < 0.05).