Pelvic Viscera Flashcards
pelvic inlet boundaries
~ entrance into pelvic cavity
- posterior border of pubic crest
- pecten pubis
- anterior border of sacral ala
- sacral promontory
pelvic outlet boundaries
- pubic symphysis
- tip of coccyx
- sacrotuberous ligament
- inferior rami of pubic and ischial tuberosities
greater pelvis ( false pelvis)
- part of the pelvis superior to the pelvic inlet
- bounded by the iliac alae and the superior aspect of S1
- occupies by abdominal viscera
lesser pelvis (true pelvis)
- between the pelvic inlet and pelvic outlet
- bounded by the pelvic surfaces of the hip bones, sacrum, and coccyx
sacro - iliac joints
link the axial skeleton and the inferior appendicular skeleton
* limited mobility is allowed here
pubic symphysis
region between two pubic bones
* fibrocartilaginous
lumbosacral joint
between the L5 and S1 vertebrae
* strengthened by iliolumbar ligament
sacrococcygeal joint
between the sacrum and coccyx
pelvic ligaments
- anterior sacroiliac
- posterior sacroiliac
- sacrotuberous
- sacrospinous
- sacrococcygeal
internal iliac artery branch off?
the common iliac artery
visceral branches
- visceral bladder
- rectum
- reproductive organs
parietal branches
- iliolumbar
- sacral
- superior gluteal
- inferior gluteal
iliolumbar
supplies muscles of posterior abdominal wall
sacral
supply the spinal meninges enclosing the roots of the sacral nerves
superior gluteal
supplies the gluteal muscles
inferior gluteal
supplies the gluteal muscles
umbilical- patent part
superior aspect of the bladder
obturator- origin
medial compartment of thigh
inferior vesical (male anatomy)
body/fundus of bladder along with internal reproductive organs
vaginal (female anatomy)
body/fundus of bladder, vagina, uterus, inferior aspect of bladder
middle rectal
inferior aspect of rectum
internal pudendal
perineum
uterine (female anatomy)
uterus and ovaries
sacral plexus nerves - somatic
L4-S4
lumbosacral trunk
L4/5
sciatic
L4-S3
pudendal nerve
S2-S4
- travels with internal pudendal artery
- main sensory and motor of perineum
superior gluteal nerve
L4-S2
- gluteus medius and minimus and tensor fasciae latae
inferior gluteal nerve
L5-S2
- gluteus maximus
obturator nerve
L2-L4
- muscles of medial compartment of thigh
sacral sympathetic trunks
- descend on the pelvic surface of the sacrum
- provide postganglionic fibers to the vessels and sweat glands of the lower limb
hypogastric plexi (superior and inferior)
networks of sympathetic, parasympathetic and visceral afferents
pelvic sphlanchnic nerves
- preganglionic parasympathetic fibers form S2-S4
- distal parts of colon starting at the descending colon and pelvic viscera
visceral afferents
travel retrograde with autonomic nerve fibers
