bulbospongiosus muscle การใช้

Urine remaining in the male urethra is expelled by several contractions of the bulbospongiosus muscle, and, by some men, manual squeezing along the length of the penis to expel the rest of the urine.
Physiologically, erection is triggered by the parasympathetic division of the autonomic nervous system ( ANS ), causing nitric oxide ( a bulbospongiosus muscles compress the veins of the corpora cavernosa restricting the egress and circulation of this blood.
It arises by tendinous fibers from the inner and forepart of the ischial tuberosity and, running medially, is inserted into the central tendinous point of the perineum ( perineal body ), joining in this situation with the muscle of the opposite side, with the external anal sphincter muscle behind, and with the bulbospongiosus muscle in front.