pelvis

Question 1

what are the 4 functions of the pelvis?

Answer 1

Locomotion
Parturition
Support of abdominal viscera
Protection of pelvic viscera

Question 2

what are the 4 bones that make up the pelvis?

Answer 2

left hip
right hip
sacrum coccyx

Question 3

in anatomical position, the pelvis is tilted so that the _________ and __________ lie in the same vertical plane

Answer 3

ASIS; upper margin pubis symphysis

Question 4

in anatomical position, the pelvis is tilted so that the _____ and the _______ lie in the same horizontal position

Answer 4

tip of coccyx; upper margin pubis symphysis

Question 5

What is the pelvic inlet?

Answer 5

Superior aperture of the pelvis

Question 6

What are the boundaries of the pelvic inlet?

Answer 6

Sacral promontory
Sacral alae
Arcuate line 
Pecten pubis 
Pubic crest

Question 7

The structures of the pelvic inlet form a continuous border known as the?

Answer 7

Pelvic brim or linea terminalis

Question 8

What does the pelvic brim divide?

Answer 8

Greater/ false pelvis

Lesser/ true pelvis

Question 9

What is the inferior aperture of the pelvis?

Answer 9

Pelvic outlet- diamond shaped

Question 10

What are the boundaries of the pelvic outlet?

Answer 10

Pubic symphysis 
Ischiopubic rami
Ischial tuberosities 
Sacrotuberous ligament 
Tip of coccyx

Question 11

The pubic symphysis, ischiopubic rami and is hail tuberosities form the?

Answer 11

Pubic arch

Question 12

What are the different pelvic types?

Answer 12

Anthropoid
Playtpelloid
Android
Gynecoloid

Question 13

Which pelvis type is the rarest and most associated with birth difficulties?

Answer 13

Platypelloid- short A-P diameter

Question 14

Which pelvis type is ideal for childbirth?

Answer 14

Gynecoloid

Question 15

What are the shape differences in the male vs female pelvis?

Answer 15

Male- heart shaped

Female- oval shaped

Question 16

What parts of the pelvis are typically larger in women?

Answer 16

Pelvic cavity, pelvic outlet, subpubic angle

Question 17

What are the sacrum differences in male and female?

Answer 17

Female- shorter and wider than male

Question 18

What 2 ligaments of the pelvis help form the greater and lesser foramen?

Answer 18

Sacrotuberous

Sacrospinous

Question 19

What structures pass through both the greater and lesser sciatic foramen?

Answer 19

Pudendal nerve, internal pudendal vessels and nerve to obturator internus

Question 20

what are the intrapelvic causes of sciatica?

Answer 20

piriformis syndrome
compression by fetal head during pregnancy
pelvic tumors

Question 21

what is the lateral wall of the pelvis covered primarily by?

Answer 21

Obturator internus

Obturator fascia

Question 22

what is the posterior wall of pelvis covered by?

Answer 22

piriformis muscle

coccygeus muscle

Question 23

the floor of the pelvis is composed of structures which give support to abdominal and pelvic viscera. these include?

Answer 23

peritoneum- above

pelvic diaphragm- below

Question 24

what are the 3 pouches of the peritoneum?

Answer 24

rectovesical
rectouterine
vesicouterine

Question 25

ascites and blood accumulation can occur in which pouches?

Answer 25

rectovesical

rectouterine

Question 26

which pouch can an ectopic pregnancy occur in?

Answer 26

rectouterine

Question 27

the pelvic diaphragm is a major support structure for pelvic viscera. what muscles are here?

Answer 27

coccygeus- simple

levator ani muscle- complex

Question 28

what are the 2 openings within the pelvic diaphragm?

Answer 28

urogenital hiatus

anal aperture

Question 29

which part of the levator ani is off the tendinous arch of levator ani?

Answer 29

iliococcygeus

Question 30

which part of the levator ani is the main part and is off the pubis?

Answer 30

pubococcygeus

Question 31

the medial fibers of the pubococcygeus form what 3 structures?

Answer 31

puboprostaticus
pubovaginalis
puboanalis

puboprostaticus and pubovaginalis both function in micturition

Question 32

what are the functions of the puborectalis?

Answer 32

maintain anarectal junction
relaxes during defecation
directs fetal head during parturition

Question 33

misalignment of the sacrum with impingement on S3-S4 may affect what? (4)

Answer 33

fecal continence
urinary continence
pelvic floor integrity
parturition