Pelvis I Flashcards
Boundaries of the pelvis
ilium
pelvic floor
Where is the Iliac fossa
on the antermedial surface
Arcuate line
on antermedial surface for muscle attachment
Acetabulum
convergence of all 3 bony components
Ramus of ischium
contributes to obturator foramen
lined by membrane and muscle
forms portion of lateral pelvic wall
Ischial spine
important for muscle attachment
Rami of the pubis
2 of them
contriute to obturator foramen
superior rami of pubis
extends from body towards actebulum
inferior fami of pubis
extends from body towards ischial ramis
Sacroiliac joint
synovial
binds sacrum to ilium
transfers weight from torso to lower limb
Lumbosacral joint
junction between L5/S1
secondary cartilaginous joint
small IV disc
anterior longitudinal ligament maintains integrity
Sacrococcygeal joint
junction between coccyx/sacrum
secondary cartilagious joint
very small IV disc
pubic symphysis
fibrocartilagous joint
moveable
Relaxin
given during childbirth, increases mobility of pusbic symphysis
Sacrospinous ligament
from sacrum to IS
changes greater sciatic notch into greater sciatic foramen
Sacrotuberous ligament
from scarum to IT
changes less sciatic notch into lesser sciatic foramen
female ilium
more flared
more laterally placed
compressed/shortened
male ilium
elongated
female pelvic inlet
oval shaped
male pelvic inlet
more circular or heart shaped
IS and coccyx protude into inlet more
Female pubic angle
greater than 90 degrees
male pubic angle
less than 70 degrees
male sciatic notch
rim huge
Obturator internus
overlies obturator foramen
forms part of lateral wall
travels toward femur
Piriformis
from lateral sacrum out greater sciatic formen toward femur
forms a bed where sacral nerves lay
Which muscles form the pelvic floor
levator ani and coccygeus m
Levator ani composed of which 3 muscles
puborectalis
pubococcygeus
ilioccycgeous
Puborectalis
attaches to pubis
forms sling around rectum
contricts rectum
Pubococcygeous
travels from pubis to coccyx
Iliococcygeous
runs from tendinous arch, laterally
runs to coccyx, posteriorly
Function of ampullae in retum
help mobilize feces
Urine is funneled to bladder to kidneys via _____
ureters
Ureteric orifices
where ureteres enter uniary bladd. They enter at an angle to prevent urine back up
female ureter
runs medial to uterine a
male ureter
ductus deferns tranverses over ureter
symphatic innervation of urinary system
T11-L2
parasymphatetic innervation of urinary system
S2-4 and CN X
Preprostatic urethra
surrounded by internal sphicter
Prostatic urethra
within the prostate
largest diameter for opening from prostate
membranous urethra
surrounded by external sphicter
both males and females have this
common site for kidney stones to lodge
spongy urethra
largest portion
Seminal colliculus
swelling found in prostatic urethra
starts superiorly as urethral crest
laterally have the openings of 20=30 prostatic ducts that convey prostatic fluid
center is prostatic utricle
broad ligament
extends from lateral sides of uterus to body wall
mesovarium
extends to ovary
mesosalpinx
extends to uterine tube
Ovarian ligament
attaches to medial side of ovary to wall of uterus
suspensory ligament
attaches to lateral side of ovary to body wall
provides rout for nerves and vessels which supply the region
round ligament
attaches to body of uterus, travels inside mesometrium and enters inguinal canal
