» » Anatomy of anal opening

Anatomy of anal opening

  • Share this video:
  • Anatomy of anal opening - Facebook
  • Anatomy of anal opening - Twitter
  • Anatomy of anal opening - Google+
The external anal sphincter or sphincter ani externus is a flat plane of skeletal muscle fibers, elliptical in shape and intimately adherent to the skin surrounding the margin of the anus. In a considerable proportion of cases the fibers decussate in front of the anus, and are continuous with the superficial transverse perineal muscle. Posteriorly, they are not attached to the coccyx, but are continuous with those of the opposite side behind the anal canal. The upper edge of the muscle is ill-defined, since fibers are given off from it to join the levator ani. The action of this muscle is peculiar.
megyn kendall fox news upskirtsex tube search site

External anal sphincter

next door buds pornfake photos of bonnie wright nudesexy nude latina videoking magazine porn vids

External anal sphincter - Wikipedia

Anal canal , the terminal portion of the digestive tract , distinguished from the rectum because of the transition of its internal surface from a mucous membrane layer endodermal to one of skinlike tissue ectodermal. The anal canal is 2. The canal is divided into three areas: the upper part, with longitudinal folds called rectal columns; the lower portion, with internal and external constrictive muscles sphincters to control evacuation of feces ; and the anal opening itself. The anal canal connects with the rectum at the point where it passes through a muscular pelvic diaphragm.
all japanese videosex before menstruation and pregnancymature cycle for a boy video

Human anus

The human anus from Latin anus meaning "ring", "circle" [1] [2] is the external opening of the rectum. Two sphincters control the exit of feces from the body during an act of defecation , which is the primary function of the anus. These are the internal anal sphincter and the external anal sphincter , which are circular muscles that normally maintain constriction of the orifice and which relaxes as required by normal physiological functioning. The inner sphincter is involuntary and the outer is voluntary.
aussie slut wives
loan husband to friend for sexlingerie big tit milf video galleriesgirl porn hot spunk on your facevivi ana milf


ass shaking tube
Top of the week
Video сomments(5)
  1. jacaar2203.08.2019

    knew ur pussy'd take a fist, 'd love to give u the same

  2. Darkdude1986

    small pic but really nice motive, beautiful

  3. jebac25

    You're Pretty Damn Cute with Yummy Tits I Can Put My Big Lips On

  4. wetcock2402.08.2019

    I'd love to bend you over that tree \u0026 fuck you

  5. wizz3026.07.2019

    Wooooow! Yummy baby! I love this position I would like to be behind you.Oh! and beautifull tattoo

Say a few words