Misc Pelvic

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c_sopkovich
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34280
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Misc Pelvic
Updated:
2010-09-12 19:06:17
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Misc Pelvic
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Misc. Pelvic
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  1. Pelvic Pain Line
    The inferior limit of the paritoneum, except in the case of the large intestine, where the pain line occurs in the middle of the sigmoid colon.
  2. Visceral afferent fibers
    Reflex fibers run with the parasympathetics (S2-S4).

    Pain fibers above the pain line run with sympathetics, except distal sigmoid colon and rectum.

    Pain fibers below the pain line run with parasympathetics.
  3. The pelvic plexus AKA
    The inferior hypogastric plexus.
  4. General lymph drainage of the pelvis
    • all of pelvis must drain to one of four lymph nodes
    • Inside pelvis
    • -External iliac
    • -Internal iliac
    • -Common iliac
    • Outside pelvis
    • -Sacral
    • - lumbar
    • -inguinal
  5. Where can a kindy stone lodge
    • -where it enters bladder
    • -crosses renal artery
    • -crosses iliac
  6. Ureters blood supply
    renal artery, gonadal artery, common iliac, internal iliac
  7. Parasympatheic innervation to the abdomen and pelvis
    • Vagus nerve for anything that receives its blood supply from above the gonadal artery, L2
    • L3 and lower get para from pervic splachnic S2 S3 S4 (keeps your dick off the floor)
  8. Testicular innervation
    Receives vagus nerve since blood supply is from the L2 level.
  9. What space allows bladder distention?
    • rectopubic space
    • bladder can move into false pervis
  10. What does the bladder rest on?
    • In males the prostate
    • In females the pelvic diaphragm, levator ani and coccygeal (S3, S4)
  11. Vesical Vasculature
    • -Superior vesical: branch of umbilical artery; usually several branches to anterosuperior aspect
    • -Inferior vesical: supplies fundus and neck; in females, usually arises from vaginal artery (instead of branch of internal iliac directly)
    • -Portion of fundus is supplied by vaginal artery in females and by deferential artery in males
  12. Vesical Innervation
    • -Parasympathetics (S2 - 4) and their visceral afferent fibers are completely responsible for entire micturition reflex
    • -Sympathetics: two routes to bladder, (1) superior hypogastric plexus (main route), and (2) sacral splanchnics (fibers that course down chain ganglia to pelvis); sympathetics cause contraction of internal sphincter (smooth muscle)

    PAIN courses with visceral afferents that travel with sympathetics (T 11 – L 2) for superior bladder and para for inferior badder. Only superior aspect is covered in paritoneum.

    • Pudendal nerve, S2 - 4, is somatic nerve Deep perineal nerve (branch of pudendal) Innervates sphincter urethrae
    • muscle (of perineum); this muscle is a skeletal (voluntary) muscle
  13. sacral and pelvic splanchnic nerves
    sacral is sympathetic

    pelvic is para
  14. Testies Migration during development
    starts at the level of L2, at the 28th week they reach the inguinal canal, during week 29 they are in the canal, week 30 and later they are in the scrotum.

    -They bring blood supply with them from L2 so parasympathetic innervation is from vegus nerve.
  15. Ejaculator duct
    located in the prostate and is very short

    • made from the joining of the ductus deferns and the seminal duct
    • -seminal duct secretes fructose for nutrition.
  16. The Prostate
    • Urethra and ejaculator duct transverse
    • -only one lobe in the adult, 5 lobes during development

    • Capsule of prostate is surrounded my fibrous sheath
    • -artery and nerves sit inside sheeth and outside capsule
  17. Prostate arterial and venous supply
    -Arterial supply: (1) inferior vesical, (2) internal pudendal, and (3) middle rectal (all branches off the anterior internal iliac)
  18. -venous plexus lies deep to sheath,superficial to capsule; receives deep dorsal vein and drains to both vertebral plexus and internal iliac.
    -----Explains why prostate cancer can travel to the brain.
  19. Colliculus Seminalis
    “hill” that receives openings of ejaculatory ducts.
  20. Fornix
    continual recess around cervix; anterior, posterior & lateral fornices
  21. Vagina Spacial relations
    • Anterior relations: urinary bladder and uterus; (uterus also lies superior)
    • Lateral relations: levator ani and ureter
    • Posterior relations:
    • 1. Rectum
    • 2. Rectouterine pouch
    • 3. Perineal body
  22. Vagina arterial supply
    • Vaginal artery: chief supply, branch of uterine artery or anterior internal iliac
    • Other arteries to vagina:
    • 1. Uterine, superior part
    • 2. Inferior vesical
    • 3. Middle rectal
    • 4.Internal pudendal
  23. Portions of the uterus?
    Fundus, body, Isthmus, internal OS, cervix, external OS

    -cervix has a vaginal portion and a supravaginal portion
  24. Uterine postition
    • Anteverted & anteflexed
    • -Sits on bladder

    Anteverted: entire uterus is bent forward onto bladder, longitudinal axis of vagina makes 90 - 1000 angle with uterine cervix;

    Anteflexed: Angle of uterine body is bent forward about 15 - 20 compared to uterine cervix
  25. Ligaments of the uterus
    • Broad ligament: peritoneum; attached to lateral sides of uterus;
    • -portions: mesometrium (attached to uterus), mesovarium (to ovary) & mesosalpinx (to tube)

    -infalmmation of uterous is salpinxgitis

    Gubernaculum has two remnants: ovarian ligament and round ligament: ovarian ligament extends from ovary to uterus; round ligament extends from uterus, courses through inguinal rings & canal to end in labium majus

    Uterosacral ligament: peritoneum and subserous fascia; attaches sacrum to cervix; helps “anchor” cervix, keeping it in midline

    Pubocervical ligament is portion of pubovesical ligament
  26. Lateral cervical ligament
    • cardinal ligament; peritoneum and subserous fascia; located at inferior end of broad ligament; conveys uterine vessels; of the
    • ligaments, greatest support; attached to cervix
  27. Uterine Support
    • Listed in sequence, beginning with greatest support:
    • 1. Pubococcygeus: portion of levator ani - dynamic
    • 2. Urinary bladder - passive (uterus sits on top)
    • 3. Ligaments of uterus
    • a. Lateral cervical (cardinal ligament)
    • b. Uterosacral
    • c. Broad
    • d. Ovarian and round: two remnants of gubernaculum
    • e. Pubocervical
  28. Uterine Artery
    • passes anterior to ureter
    • branch of internal iliac
    • Uterine artery crosses superior to ureter; uterine artery divides into descending branches (vaginal and cervical branches)
    • and larger ascending branch; many branches to uterus; usually supplies tube, may supply ovary

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