Dissection of female pelvis from a lateral approach

Interior of anal canal and lower part of rectum, close-up view

For permissions information regarding the use of these images, please contact Drew Bourn at dbourn@stanford.edu

Image #162-1
Bassett ImageDiagram Image
Legend Image
Dissection of female pelvis from a lateral approach
Interior of anal canal and lower part of rectum, close-up view
The lower part of the dissection shown in the preceding photograph is shown in more detail in this close-up view centered on the anal canal.
1 . Levator ani muscle
2 . Mucosal tunic of rectum (note numerous small depressions or pits in mucosa marking the sites of lymphatic nodules (folliculi Iymphatici))
3 . Anal columns
4 . Pectinate line
5 . Anal verge
6 . Hemorrhoidal zone
7 . Internal anal sphincter muscle
8 . External anal sphincter muscle
9 . Plicae transversales of rectum
10 . Opening of uterus
11 . Anterior labium
12 . Posterior wall of vagina
13 . Vagina
14 . Upper pointer: Anterior wall of vagina Lower pointer: Vesicovaginal septum
15 . Muscular tunic of urinary bladder
16 . Urinary bladder
17 . Vesical sphincter muscle
18 . Posterior vaginal wall posterior
19 . Hymenal caruncles
20 . Vestibule of vagina
21 . Levator ani muscle (puborectalis muscle, inserting into wall of anal canal)
22 . Central tendon of perineum