posted on 2013-08-28, 01:30authored byTadamichi Morisaka, Mai Sakai, Kazunobu Kogi, Akane Nakasuji, Kasumi Sakakibara, Yuria Kasanuki, Motoi Yoshioka
(A) Dense seminal fluid was ejaculated from the tip of the penis with initial contraction of the peduncle muscle downward. (B) A few seconds after the first ejaculation of seminal fluid, the remaining seminal fluid was ejaculated for 0.86 s (26 frames at (1/30 s)/frame).