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(Netter Basic Science) Frank H. Netter - Atlas of Human Anatomy-Elsevier (2018)

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Ischioanal Fossae

See also Plate 392

Sigmoid

colon

Iliacus

muscle

and fascia

External

iliac

vessels

Iliopectineal

line

Obturator

internus

muscle and

fascia

Pudendal canal

(Alcock’s) contains

internal pudendal

vessels, pudendal

nerve, and

perineal nerve

Ischial

tuberosity

Ureter

Extraperitoneal

(supralevator) space

(fibrofatty tissue)

Fat body of

ischioanal

fossa

Deeper part

Superficial

(perianal) part

Transverse fibrous septum

of ischioanal fossa

Submucous space (internal venous plexus)

Perianal space (external venous plexus)

Intersphincteric groove (anocutaneous line)

Rectal fascia

External anal sphincter muscle

Conjoined longitudinal muscle

Internal anal sphincter muscle

Tendinous arch of levator ani muscle

Sacrogenital fold (uterosacral

in female)

Levator ani muscle and superior and

inferior fascia of pelvic diaphragm

Peritoneum (cut edge) forming floor of pararectal fossa

Plate 374

mebooksfree.com

Rectum

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