Pelvis Flashcards
(39 cards)
Name the bony elements of the pelvic girdle
- 2 innominate: ilium, ischium, pubis
- sacrum
- coccyx
Which structures form the boundaries of the pelvic inlet
pelvic inlet:
- sacral promonotory
- arcuate line
- pectineal line
- pubic symphysis
divides pelvis into greater (false) and lesser (true)
Describe the divisions of the pelvis
- abdominal cavity
- false greater pelvis
- true lesser pelvis
List the ways the male and female pelvis differ from one another
male: subpubic angle 70 degrees heart shaped inlet narrow outlet narrow cavity narrow, convex sacrum
female: subpubic angle 90-100 degrees oval shaped inlet roomy outlet roomy cavity wide, flat sacrum
Name the four parts of the male urethra
- preprostatic (neck of bladder)
- prostatic
- membranous
- spongy
Describe the basic structure of the female internal reproductive organs
female gonads
-composed of dense fibrous tissue in which ova are produced and discharged from follicles (ovulation)
which structures form the pelvic outlet
- coccyx
- sacrotuberous lig
- sacrospinous lig
- ischial tuberosities
- pubic arch
Name the pelvic joints and the ligaments that cross them
SI joint and pubic symphysis
ligaments: stabilize SI joint
- Anterior sacroiliac ligaments
- sacrospinous ligament: good boundary between greater and lesser foramen
- sacrotuberous ligament
- iliolumbar
- anterior logitudinal
what kind of joint is the SI
plane
what kind of joints are the pubic symphysis and lumbosacral
symphysis
where does the iliacus attach
iliac fossa to lesser trochanter
what is the action of the iliacus
hip flexion
what is the innervation of the iliacus
femoral
what are the attachments of the psoas major
transverse processes T12-L4 to lesser trochanter
what is the innervation of the psoas major
ventral rami L1-3
what is the attachment of the piriformis
sacrum to greater trochanter
what are the actions of the piriformis
lateral rotation
what are the attachments of obturator internus
obturator membrane to greater trochanter
what are the action of the obturator internus
lateral rotation
what are the attachments of the coccygeus
sacrospinous ligament to coccyx
what are the actions of coccygeus
support and compress pelvic floor
what is the innervation of cocygeus
ventral rami S4-5
what is the attachment of iliococcygeus
ichium and tendinous arch of obturator internus to coccyx and midline raphe
what is the action of iliococcygeus
support pelvic viscera
