Refractory period (sex) autonomic feedback mechanism, rather than through central chemicals like oxytocin, serotonin, and prolactin. Autonomic feedback is already known to regulate other physiologic systems, such as breathing, blood pressure, and gut motility. This theory suggests that after male ejaculation, decreased wall tension in structures such as the seminal vesicles leads to a change in the fine autonomic signals sent from these organs, effectively creating a negative feedback loop. Such a mechanism is similar to decreased gastric and bowel motility once gastric contents have passed through. Once the feedback loop has been created, the refractory period remains until the loop is broken
Birthing chair Birthing chair A birthing chair, also known as a birth chair, is a device that is shaped to assist a woman in the physiological upright posture during childbirth. It is intended to provide balance and support. If backless, it is known as a birth stool. The early birthing chairs varied between having three or four legs, though three legged birthing chairs are most commonly seen. Both styles support the bottom of the women in labor and often have a slender, sloped back for comfort and to allow birthing assistants, who are positioned behind the mother in labor, to massage or