2020年12月14日星期一

hamorrhoiden zurückschieben,Anorectal anatomy

    Rectum: The upper is connected to the sigmoid colon, the lower is connected to the anal canal, the length is 12-15 cm, the rectal bladder lacuna, the female is rectal-uterine lacuna;

    Rectal column: there are about 10 where the lower end of the rectum connects with the anal canal;

    Anal flap: a half-moon-shaped wrinkle pocket between adjacent rectal columns;

    Anal sinus (anal recess): the funnel-shaped gap between the anal valve and the rectal wall, opening upward;

    Tooth line: the anal flap and the base of the rectal column, forming an irregular jagged edge at the junction of the rectum and anal canal; comparison of anatomical upper and lower teeth line

    Tissue blood supply innervation lymphatic drainage

    Dental line Mucosa Arteries: superior and inferior rectal arteries Autonomic nerves adjacent to the abdominal aorta

    Veins: superior rectal venous plexus-portal vein no pain or internal iliac artery

    Under the dental line Skin Arteries: Anal artery Internal pudendal nerve Inguinal lymph

    Veins: Inferior rectal vein-vena cava, acute pain, periiliac lymph

    Anal canal: 3 cm long, the upper edge is the tooth line, and the lower edge is the anal edge;

    Anal stents: involuntary muscles, innervated by autonomic nerves;

    Extra-anal stents: divided into subcutaneous, superficial, deep, voluntary muscles; cutting off the subcutaneous stents of the external stents will not cause fecal incontinence, and cut off the anorectal which is composed of the deep, puborectalis and internal stents Ring, causing incontinence

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