Anatomy - Pelvis

skipferl's version from 2012-03-26 03:27

Bones and Lig. of Pelvis

Question Answer
which is more superior, true pelvis (pelvic cavity) or the pelvic brimthe pelvic brim
what separates the pelvis from the perineumpelvic floor or the pelvic diaphragm
4 bones of the pelvisthe 2 os coxae, the sacrum and the coccyx
3 bones of the os coxaeilium ischium pubis
highest point in relation to vert levels, of the iliac crestL4
describe the arcuate linefrom the sacroiliac joint to the pubic tubercle
two portions of the ischiumbody and ramus
location of the ischial tuberositythe body of the ischium, inferior portion
location of the ischial spinethe inferior portion of the body of the ramus
describe the 3 portions of the pubisone body two rami
where is the pectineal lineon the superior ramus of the pubis
where is the obturator creston the superior ramus of the pubis
how many pairs of foramina in the sacrum4
what is the sacral promontorythe anterior superior ridge on the sacrum
what forms the sacral hiatusthe lack of lamina in the S5 and S4 vertebrae
how many vertebrae are usually included in the coccyx4, sometimes 5 or 3
what are coccygeal hornsarticular processes that articulate with sacral horns
describe the lumbosacral jointbetween L5 and S1, contains a IV disk that is thicker anteriorly
describe the sacrococcygeal jointa thin fibrocartilaginous disc between sacrum and coccyx
describe the ligaments of the sacroiliac jointinterosseous, anterior and posterior ligaments
which arteries supply the sacroiliac jointssuperior glut, iliolumbar, lateral sacral
what type of joint is the pubic symphesismedian secondary cartillaginous joint
what type of cartilages are in the pubic symphesisthin layer of hyaline and thick layer of fibrocartilage
2 ligaments of the pubic symphesissuperior pubic ligament, inferior pubic ligament
what are the name of ligaments connecting the spine to the pelvisvertibropelvic ligaments
what si the iliolumbar ligamentconnects L5 to the iliac crest
what is the sacroiliac ligamentconnects the sacrum to the ilium ant, interosseous, and post
which vertebropelvic ligament prevents the rotation of L5 on the sacrumiliolumbar
what is the sacrotuberous ligamentconnects sacrum to the tuberosity of the ischium, and forms the lesser sciatic foramen out of the lesser sciatic notch
what is the sacrospinous ligamentconnects sacrum to the spine of the ischium, and forms the greater sciatic foramen out of the greater sciatic notch
structures through greater sciatic foramenPPPISS... piriformis, pudendal nerve and vessels, posterior femoral cut. n., inferior gluteal nerves and vessels, superior gluteal nerves and vessels, sciatic nerve
structures thru the lesser sciatic foramenPIO... branches of pudendal nerve, internal pudendal vessles, obturator internus and its nerve
ant, lat, posterior borders of false pelvisabd wall, iliac fossa, L5 and S1
ant, lat, post, inf borders of true pelvispub symph and rami of pubis, pelvic part of ilium and ischium, saccrum and coccyx, inferior pelvic diaphragm
what struture seperates the true and false pelvisthe iliopectineal line
describe antropoid pelvislong AP short width
describe platypelloid pelvisshort AP, very wide (caesarian)
describe android pelvissmall male pelvis
describe gynecoid pelvistypical female pelvis

Male or female

Question Answer
heavier and larger bonesmale
circular pelvic inletfemale
narrower subpubic anglemale
longer and narrower saccrummale
further apart ischial tuberositiesfemale
deeper and narrower pelvic cavitiesmale
larger aperaturesfemale
oval obturator foraminafemale


Question Answer
weak areas of pelvissacroiliac, ala of ilium, ramus of pubis, obturator aperature
describe the passage of the obturator internusfrom pelvis through lesser sciatic foramen to greater trochanter
where do the prirformis and the obturator internus insertthe greater trochanter
what is the common function of pitiformis and obturator internusrotates thigh laterally, adn abducts
what 2 mucles make up the pelvic floorcoccygeus and the levator ani
what 3 mucles make upt th elevator ani grouppuborectalis, pubococcygeus, iliococcygeus
what is the tendinous archa thickened portion of the obturator fascia, gives rise to iliococcygeus
weakening of which muscle causes stress incontinencepubovaginalis
what is the origin and the insertion of iliococcygeusfrom the tendinous arch to the anococcygeal ligament
what is the function of the pelvic floor musclesto support the pelvic viscera
descibe the parietal pelvic fasciacovers all the internal surfaces of the muscles, forms obturator fascia which thickens to form tendinous arch
what do all levator ani mucles attach tothe tendinous arch of the obturator fascia
what is the retropubic spacearea between parietal pelvic fascia and anterior surface of the bladder
describe the visceral fascia in females (of the pelvis)envelops the pelvic viscera and connects them to the parietal pelvic fascia forming the uterosacral ligament and the transverse cervical ligaments
describe the fascia of the pelvvic diaphragmenvelops the levator ani muscles, forms pubovesical ligament in females (anterior ligament) thus forming the medial wall of the ischioanal fossa
describe the ischioanal fossaspace between the ischium and the pelvic floor muscles

Pelvic Innervation

Question Answer
which rami make up the sciatic nerveL4 to S3
what rami make up the lumbosacral trunkL4 L5
what rami form the S1 to S4 nervesS1 to S4
where do all nerves of the sacral plexus leave throughthe greater sciatic foramen
what is the result of compression of the sacral plexuspain in the lower limb
which levels of rami form the pudendal nerveS2,3,4
describe the path of the pudendal nerveS2,3,4 through greater sciatic foramen, back in the pudendal canal through the inferior sciatic notch
describe the branches of the pudendal nerve (3)dorsal of peins or clitoris, perineal nerve, inferior rectal nerve
where do the obturator come fromthe lumbosacral plexus
describe the path of the obturator nerveleaves through the obturator foramen to supply the medial thigh
describe the level of the rami of the coccygeal plexusS4 S5
4 things innervated by the coccygeal plexuscoccygeus m, levator ani, sacrococcygeal joint, skin over coccyx
how many ganglia in the sacral symp trunk4 pairs
describe the outgoing connections of the sacral sympathetic plexusthey send out gray branches to the ventral rami and the coccygeal nerves... also send out to hypogastric plexus
describe the parasympathetic innervation around the pelvisthe splanchnic nerves represent the parasympathetics
which nerve plexus has both sympathetic and parasympathetic innervationsthe inferior hypogastric plexuses
what is really the only parasympathetic structure in the pelvisthe pelvic splanchnic nerves
which plexuses arise from the inferior hypogastric plexus (4)middle rectal plexux, vesical plexus, prostatic, uterovaginal plexus
what does the middle rectal plexus innervatethe internal and external sphincter and rectum
what does the vesical plexus innervatebladder, semenal vesicles, prostate,
what does the prostatic plexus innervateprostate, ejaculatory duct and urethra, bulbourethral gland and penis
what does the uterovaginal plexus innervatevagina, cervix, uterus, urethra, clitoris
which system to you need to activate to use the bathroomparasympathetic

Pelvic Arteries

Question Answer
what is the lateral sacral artery a branch of and what does it supplybranch of posterior division of internal iliac and it supplies the spinal meninges and the skin over the sacrum by passing thru the spinal foramina
describe the branching of the internal iliac asplits into anterior and posterior divisions
describe the brances of th eposterior division of the internal iliac arteryall parietal... the iliolumbar to the sacroiliac joint... the lateral sacral to the meninges.. the superior and inferior gluteal aa to the gluetal muscles
describe the branches of the anterior divison of the internal iliac arterydivides again into parietal and visceral branches
describe the parietal branches of the anterior divison of the internal iliac arterythe obturatos, inf glut, and the internal pudendal
describe the branches of the visceral brances of the anterior division of the internal iliac arteryumbillical, sup vesical, inf vesical (males) uterine and vaginal (female), middle rectal
describe the obturator arterybranch of the internal iliac close to the umbilical, crossed by ureter
describe the path and the target of the inf gluteal arteryglut max supplied, passes thru the greater sciatic foramen below piriformis
describe the internal pudendal arterybranch of the anterior div of the int iliac a, leaves thru the greater sci foramen, enters back thru the lesser sci foramen... divides into three branches in the pudendal canal
3 branches of the nternal pudendal ainferior rectal, dorsal artery, perineal artery
If you ligate the umbilical artery before it branches to the superior vesical what will happen The blood to the superior portion of bladder will decrease.
If you ligate distal end of the umbilical artery Nothing will happen bec it is obliterated at the distal end.
What about if you ligate the inf. Vesical artery Blood decreases to bladder, prostate and seminal vesicle
describe the gonadal arteriesbranches of the abdominal aorta crossing ANTERIOR to the ureters
describe the median sacral arteryUNPAIRED, from the abd aorta, meets with lateral sacral artery and rectals
describe the two unpaired arteris of the pelvic regionthe superior rectal and the medain sacral
describe teh superior rectal arteryfrom the inf mesenteric artery, crosses the LEFT common iliac
describe the two gonadal veinson the left drains into L renal, on the right direct to aorta
describe the lymph drainage of the pelvisall drain to internal iliac and into the preaortic lymph nodes to L subclavian