CH 8 Pelvis

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Author:
samfan87
ID:
83277
Filename:
CH 8 Pelvis
Updated:
2011-05-02 16:36:24
Tags:
pelvis anatomy
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Description:
Overview of Pelvic Organs
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  1. This organ serves as a temporary reservoir for urine, is located immediately posterior to the pubic symphysis in both genders.
    The urinary bladder
  2. In females, the bladder is also immediately (position)
    anterior to the uterus.
  3. The bladder is very flexible, capable of holding as much as
    750 ml of urine.
  4. The four surfaces of the bladder are:
    •Superior – body of the bladder •Posterior – fundus or base of the bladder •Inferolateral (2) – adjacent to levatorani muscles
  5. The four angles of the bladder are:
    •Anterior – bladder apex; formed by junction of superior and inferolateral surfaces •Inferior – bladder neck; formed by junction of posterior and inferolateral surfaces •Posterolateral (2) – site of ureter entrances
  6. The distal portion of the large intestine is
    the rectum
  7. Measuring about ? in length
    15 cm
  8. the rectum begins at the
    end of the sigmoid portion
  9. the rectum ends at the
    anal canal
  10. The anatomical features of the rectum are the:
    • •Sacral flexure – proximal curve
    • •Perineal flexure – distal curve
    • •Ampulla – upper, expandable one-third of rectum
    • •Transverse rectal fold (Kohlrausch's fold) – located between the flexures about 5-8 cm from the anus
    • •Anal columns – longitudinal folds in the distal rectum
  11. The female reproductive organs are the:
    • •Uterus
    • •Ovaries
    • •Uterine tubes
    • •Vagina
  12. UTERUS:
    • •Pear-shaped, muscular organ
    • •Located between the bladder and rectum
  13. •The Uterus is Divided into body (proximal portion) and cervix (distal portion)
    • •Fundus – upper, rounded portion of body
    • •Cornua – corners of body where uterine tubes connect
  14. •Uterus Three tissue layers:
    • ◦Endometrium – innermost layer
    • ◦Myometrium – thickest, middle layer of muscle
    • ◦Perimetrium – outer, serous layer
  15. •Uterus Function is to:
    house and protect fetus during pregnancy
  16. •Supported by ligaments
    • ◦Round ligaments
    • ■Extend from cornua to labia majora
  17. ◦Uterosacral ligaments
    ■Connect lateral walls of cervix to sacrum
  18. ◦Lateral cervical ligaments
    ■Fan-shaped ligaments from lateral walls of cervix and vagina to lesser pelvis
  19. Vesicouterine pouch
    • •Anterior space
    • •Located between uterus and bladder
  20. Rectouterine pouch (pouch of Douglas)
    • •Posterior space
    • •Located between uterus and rectum
  21. Retropubic space
    • •Inferior space
    • •Located between bladder and pubic bones
  22. The primary organs of the male reproductive system are the:
    • •Testis
    • •Epididymis
    • •Vas deferens
    • •Ejaculatory duct
    • •Seminal vesicle
    • •Prostate gland
    • •Bulbourethral gland
    • •Penis
  23. Testis
    • •Paired, oval organs
    • •Suspended in scrotum
    • •Comprised of lobules containing seminiferous tubules
    • •Function to produce sperm and sex hormones
  24. Epididymis
    • •3 parts: head, body, tail
    • •Receives seminiferous tubules at head
    • •Functions to store sperm during maturation
  25. Vas deferens
    • •Continuation of the tail of the epididymis
    • •Contained within spermatic cord
    • •Merges with seminal vesicle to form ejaculatory duct
  26. Ejaculatory duct
    • •Formed by junction of seminal vesicle and vas deferens
    • •Empties sperm into the prostatic urethra
  27. Seminal vesicle
    • •Paired glands consisting of coiled tubules that form pouches
    • •Located lateral to vas deferens, posteroinferior to bladder, and superior to the prostate
    • •Functions to produce part of seminal fluid before ejaculation
  28. Prostate gland
    • •Largest accessory gland of male reproductive system
    • •Divided into 4 zones:
    • ◦Peripheral (70%)
    • ◦Central (25%)
    • ◦Transition (5%)
    • ◦Periurethral (>1%)
    • •Surrounds prostatic urethra
    • •Located inferior to the bladder
    • •Functions to secrete part of seminal fluid
  29. Bulbourethral glands
    • •Two small glands; also called Cowper’s glands
    • •Located posterior and lateral to membranous urethra
    • •Function to secrete part of the seminal fluid
  30. Penis
    • •External reproductive organ
    • •2 parts: root (attachment portion) and body (free portion)
    • •Composed of 3 tissue masses:
    • ◦Corpora cavernosa (2)
    • ◦Corpora spongiosum

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