how many sphincters do we have?
When I was in high school, I was taught that you had a very unusual muscle in your body, a circular muscle, and the human body has only two of this type. The muscle is called a sphincter, and one is located at the bottom of your stomach, and the other, of course, is your asshole.
Since that time, I have heard (read mainly in mens magazines) the word 'sphincter' used in the plural, as in, "The horny stud dilated her sphincters with his throbbing 12 inches..."
Curious, I asked around, and the answer I received was thus: You DO have TWO sphincters (not including the stomach one;) the "inside" one is involuntary and only opens when a turd is waiting for dismissal, the "outide" sphincter is the one you pinch shut while running for an available toilet.
So, which is it? Do I have one asshole or two?
What you have heard is quite correct--you have 2 sphincters (besides the stomach one).
It is at the lower edge of the muscle which makes up the wall of the rectum. Although one cannot move it at his own will because it is controlled by the autonomous nerve system, it is the role of this muscle to keep the anus closed.
Strong muscle that one can tighten at will since it is controlled by the spinal nerve. There are a lot of venous plexus, which is the part where veins gather together like meshes of a net.
Hope this helps!
Please be advised that I am only a Poonurse. I am NOT a medical doctor. Any advice I give should be taken moderate skepticism. Please consult a REAL medical doctor if you feel you have a serious medical condition.
Poonurse is an RN with 25 years experience in labor and delivery. Her qualifications include seeing a lot of poop, and owning a computer. Also, she works in Michigan, which she calls the asshole of the universe, so that's another bit of credibility.
Got a question for her?