How many answers do you know? And, the answers to the quiz will be at the end. Being informed about your anatomy—knowing where things are located in your body—is an important first step for anyone having anal sex.
During anal sex, the penis or dildo, or whatever is inserted into the anus, past the external and internal sphincter muscles, and into the rectum. The rectum is connected to the sigmoid colon, which is where poop is collected and stored by your body before you are ready to take a poop.
It can take hours until it fills up and you have to defecate. When we talk about stretching the muscles for anal sex… what muscles are we talking about? The external and internal sphincters your butt hole need to stretch open, or relax, to allow entry.
You can control your external sphincter skeletal muscle consciously, while the internal sphincter smooth muscle is not under voluntary control, and may need some additional coaxing to relax.
This is one difference between smooth muscle versus a skeletal muscle. Nerve endings produce sensations through light touch or pressure by transmitting information from an external stimulus to your brain. Around your anus, there are many nerve endings that can produce pleasure or pain. Foreplay can help you begin enjoying the sensations around your anus, and also help to relax your sphincter.
