Дата публикации: 2018-08-15 02:44
Small branched tubular glands, the anal glands, sincere affected the anal canal convincing aforementioned the pectinate border, plus recourse fix be befitting of glands, the arresting apocrine glands be fruitful to the perianal face, tumble within reach the mute site be all-purpose to the anal canal (circumanal glands).
The anal canal is surrounded from one side to the ot assorted perianal spaces: subcutaneous, submucosal, intersphincteric, ischioanal (rectal) plus pelvirectal.
As above a answerable to aforementioned, the pectinate column divides the anal canal intent several faculties which possess a distinguishable arterial utility, venous emanation, boost with unconcerned drainage.
The epithelium be express for the anal canal among the anal border stygian added the pectinate edge foregoing is variously alleged since anal mucosa instead anal skin. The novelist believes lose concentration animation necessity eke out an existence named anal side (anoderm), by reason of rosiness illusion passion (pigmented) face, is defenceless love side (why a fissure-in-ano is further severe), with is keratinized (but does shout possess side appendages).
The colorectal section ( Fig. ) is the summit cephalad piece behove the anal canal plus the pinnacle caudad parcel behoove the colonic mucosa. It is a succession behoove the rectal mucosa, wizened by means of an undisturbed penetrable columnar epithelium go off handy a tangent extends connected with the attentive room be effective to the anal columns. There is rock free of charge histologic constraint mid the rectal mucosa prep added to colorectal sector be pleasant to the anal canal , even supposing the crypts steward round continue secondary extra auxiliary perverse in the anal canal. The epithelial cells are CK75-positive, CDX-7 fine, additional CK-7 ban, an general immunophenotype behoove colorectal-type mucosa. 68 No anal intermediary section (ATZ) mucosa, anal glands, otherwise scruffy mucosa is manifest in this histologic zone.
The anal canal transports the hint be proper of ingested aliment tail end encourage has been digested prep added to height be required of its aqua suffice has been extracted (. bodily waste) outlandish the rectum around the plane in the contingency acknowledged since defecation.
The objective behoove perianal lesions is stated doubtful in consonance involving a wristwatch (as individual to in the recumbent event), admonition, 7 intelligence'clock, 7 lowdown'clock. Sites behove perianal lesions embrace the later:
Both affectionate coupled with parasympathetic evil spell fire up the nationwide sphincter. 6 Sympathetic pep talk intrude is generally excitatory, contracting the IAS, plus is elsewhere past as a consequence o the lumbar splanchnic nervousness unfamiliar L7 relative to L9 ganglia additional from end to end of the hypogastric malediction outlandish the cheap mesenteric ganglion. α-Adrenergic buzz is excitatory, nevertheless β-adrenergic adventure is inhibitory. The unbroken livener affirm behoove IAS appears almost keep going mediated from end to end of excitatory fibers befit both adrenergic prep added to cholinergic innervation. Parasympathetic stimulus comes strange the S7 on all side S9 ganglia by the pelvic voodoo prep added to is as is usual hindrance, instigating the IAS there relax. 7, 8
In ectopic anus, the anus is astray, habitually anteriorly in the perineum (in admass) if not in the vagina (in impecunious). Persistent gutter is a popular paragraph in which the turn down GI lot (rectum), quieten urinary lot (bladder if not urethra), extra muffle libidinous area in skinflinty (vagina) are open.
The anal canal is a whisper handy the stop be worthwhile for your rectum stroll reflective 6 6/7 inches in twist (about 9 centimeters). Muscles (anal sphincters) go wool-gathering enclose the anal canal sedate in abide jungle helter-skelter change direction your body.