1. Pelvis And Perineum

Front 1

4 Bones that make up the Bony Pelvis:

Back 1

-Sacrum (S1-S5)
-Coccyx
-2 Innominate bones - (ox coxal or hip bone)

Front 2

3 components of the hip bone:

Back 2

-Ilium
-Ischium
-Pubic bone

Front 3

What are 3 important structures on the hip bone?

Back 3

1. Acetabulum
2. Lesser sciatic notch
3. Greater sciatic notch

Front 4

What articulates with the acetabulum?

Back 4

Head of femur

Front 5

What makes up the acetabulum?

Back 5

ALL THREE hip bone components:
-Ilium
-Ischium
-Pubic bone

Front 6

Lesser Sciatic Notch is the concavity between:

Back 6

Ischial Spine
Ischial Tuberosity

Front 7

Greater Sciatic notch is located

Back 7

Superior to Ischial spine
-Formed b the ilium in part

Front 8

2 Important spaces created by the bony pelvis:

Back 8

-True pelvis (lesser)
-False pelvis (greater)

Front 9

Boundaries of True pelvis:

Back 9

-Below iliopectineal line
-Between pelvic inlet and outlet

Front 10

Function of True Pelvis:

Back 10

Contains and protects parts of the GI, GU, and reproductive structures

Front 11

Contents of True Pelvis:

Back 11

-Rectum
-Uterus/Fallopian tubes (Female)
-Prostate (male)
-Bladder

Front 12

Boundaries of False Pelvis:

Back 12

Above pectineal line
Posterior: Spinal cord
Anterior: abdominal walls

Front 13

Contents of False Pelvis:

Back 13

Abdominal viscera - of little importance

Front 14

Sacrum consists of:

Back 14

5 fused vertebrae S1-S5

Front 15

Parts of Sacrum that Articulate:
-with what?

Back 15

Anterior/Lateral
-With iliac crests

Front 16

Important feature of Sacrum:

Back 16

Promontory - creates posterior wall of pelvis

Front 17

5 important Pelvic ligaments:

Back 17

1. Anterior longitudinal
2. Iliolumbar
3. Posterior sacroiliac
4. Sacrospinous
5. Sacrotuberous

Front 18

What forms the GSF/LSF?

Back 18

-Sacrospinous Lig (separates them)
-Sacrotuberous Lig (inferior)

Front 19

Functions of Sacrospinous and Sacrotuberous ligaments:

Back 19

-Prevent excess superior /posterior rotation of inferior aspect of sacrum
-Support weight of vertebral column.

Front 20

Bony components of Obturator Foramen:

Back 20

-Pubic ramus
-Ischial ramus

Front 21

3 things pass thru the Obturator Canal:

Back 21

-Obturator nerve
-Obturator Artery
-Obturator Vein

Front 22

What is the obturator canal?

Back 22

A small hole in the membrane over the obturator foramen.

Front 23

Plane of Pelvic Inlet runs between what 2 points?

Back 23

-Tip of Sacral Promontory
-Superior edge of Pubic Symphysis

Front 24

Linea terminalis runs along what 3 points?

Back 24

1. Sacral promontory
2. Arcuate line (iliac)
3. Pectineal line

Front 25

Plane of Pelvic Outlet runs between what two points?

Back 25

1. Sacrum S5
2. Inferior edge of Pubic Symphysis

Front 26

Dimensions of avg female pelvic outlet:
-Transverse
-Anteroposterior

Back 26

Transv: ~11 cm
Ant/post: ~9.5-11.5 cm

Front 27

What is the Conjugate diameter?

Back 27

another name for the plane of the pelvic inlet

Front 28

Avg length of the conjugate diameter:

Back 28

~11 cm

Front 29

What is the Pelvic Axis?

Back 29

A line in the MEDIAN PLANE - ALWAYS at the center piont of the pelvic cavity - this means it ANGLES around pubic symphysis.

Front 30

Pubic Arch:
-Males
-Females

Back 30

-Males = < 90 degrees
-Females = > 90 degrees

Front 31

If cement poured into pelvis, how would it flow in the
-Male
-Female

Back 31

Male = convergant

Female = Divergant

Front 32

What is the preferred type of pelvis for delivery?

Back 32

Gynecoid

Front 33

2 Spaces created by the Pelvic Diaphragm:

Back 33

1. Intra-pelvic (visceral)
2. Ischiorectal

Front 34

Where is the intrapelvic space?

Back 34

Superior to pelvic diaphragm

Front 35

Where is the ischiorectal fossa?

Back 35

-Inferior to pelvic diaphragm
-Posterior to UG diaphragm

Front 36

What muscles make up the Pelvic Diaphragm?

Back 36

-Levator Ani
-Coccygeus

Front 37

3 components of Levator Ani:

Back 37

1. Puborectalis
2. Pubococcygeus
3. Iliococcygeus

Front 38

What is the importance of Puborectalis?

Back 38

-Forms a sling
-Maintains fecal continence

Front 39

What is Levator Ani innervated by?

Back 39

-Perineal branches of S3-S4
-Inferior rectal nerve

Front 40

What is the Coccygeus muscle innervated by?

Back 40

S4,S5

Front 41

What is the IMPORTANT FUNCTION of levator ani?

Back 41

MAIN SUPPORT FOR PELVIC VISCERA

Front 42

What muscle is adjacent to the pelvic diaphragm?

Back 42

Piriformis