Anatomy - Pelvic And Perineum

Front 1

What does the false pelvis contain?

Back 1

abdominal organs

Front 2

What of the pelvis are in the same plane anatomically? What does this do to the planes of the superior and inferior pelvic aperture?

Back 2

the ASIS and the pelvic symphysis
Superior pelvic aperture - almost vertical
Inferior - almost horizontal

Front 3

Sacrotuberosity ligament attachment points-

Back 3

posterior ililac spines and dorsal surface of sacrum

medial margin of the ischial tuberosity

Front 4

Sacrospinous ligament -- attachment points-

Back 4

medial margin of lower sacrum to ischial spine

Front 5

What muscles cover the inner surface of the pelvis?

Back 5

- piriformis
obturator internus

Front 6

Piriformis - innervation and attachments

Back 6

origin - anterior surface of the middle 3 sacral segments passes laterally through the greater sciatic foramen to insert on to the greater trochanter

innervation - s1 2

Front 7

Obturator internus - innervation and attachemtns

Back 7

origin - bone surrounding the obterator foramen
to lesser lesser sciatic foramen -where the tendon makes a 90 degree turn to go back and attach to the greater trochanter

innervation - nerve to the obterator - L5, S1, S2

Front 8

Name the innervation and attachments for the muscle that creates the posterior pelvic floor

Back 8

Coccygeus m

arises from the ischial spine and inserts on the lateral marigin of the lower sacrum and coccyx -- immediately deep to sacrospinous ligament

innervated by the perineal branch of S4

Front 9

Name the innervation and attachments for the muscle that creates the anterior pelvic floor

Back 9

levator ani muscle
arises from the pubis and the tendinous arch (pelvic fascia over the obturator internus) and inserts on the coccyx

Front 10

what are the sections of the leavator ani?

Back 10

1. pubococcygeus
2. iliococcygeus

Front 11

What creates the anococcygeal raphe/

Back 11

fibers from the left and right pubococcygeal

Front 12

what does the pubococcygeus create?

Back 12

the anococcygeal raphe and the puborectalis

Front 13

What muscle fibers does the puborectalis contain?

Back 13

1. external anal sphincter
2. pubococcgeus

Front 14

innervation of the levator ani?

Back 14

S4 and pudental (S2,3,4)

Front 15

What 3 things are needed to pinch the rectum after it is pulled by the puborectal m?

Back 15

The parietal peritoneum and endopelvic fascia (superiorly)
and the perineal body inferirorly

Increased intraabdominal pressure brings these two things together

Front 16

Where does the rectum begin? and go?

Back 16

mid - sacral level -- passes inferiorly bending slightly to the left at its midregion (ampulla)

Front 17

When does the rectum switch to anal canal?

Back 17

when it passes through the pelvic diaphragm

Front 18

What is significant below the pouch of douglas?

Back 18

The rectum is directly posterior to the vagina

Front 19

What does the retrovesical pouch contain?

Back 19

small intestines

Front 20

What does parital branches and visceral branches of the internal iliac supply?

Back 20

parital - pass out of the pelvis and supply pelvic wall

visceral - supply pelvic viscera