Exam 4: Pelvis Flashcards

1
Q

Pelvic inlet/brim

A

pectineal line of pubis, arcuate line of ilium, and sacral promontory

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2
Q

Greater pelvis (false pelvis)

A

lower part of abdominal cavity; superior to pelvic inlet

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3
Q

Lesser pelvis (true pelvis)

A

actual pelvis, inferior to pelvic inlet & superior to pelvic outlet

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4
Q

Sacrospinous ligament

A

Sacrum to ischial spine
help prevent anteroinferior displacement of superior sacrum
Form lesser sciatic foramina

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5
Q

Sacrotuberous ligament

A

sacrum to ischial tuberosity
help prevent anteroinferior displacement of superior sacrum
Form greater sciatic foramina

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6
Q

Female pelvis is different than male pelvis because

A

Pelvic inlet is oval, pelvic canal is short with parallel walls, IT and spines are everted, greater sciatic notch is broader, pubic arch and angle is broader, relatively short and broad sacrum

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7
Q

Lateral pelvic wall

A

Obturator internus - arises within lesser pelvis, travels through lesser sciatic foramen, and attaches to femur’s greater trochanter
Obturator membrane - lines obturator internus muscle

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8
Q

Posterior pelvic wall

A

piriformis - attaches to sacrum within lesser pelvis (through greater sciatic foramen) and attaches to femur’s greater trochanter
Bed for sacral nerve plexus

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9
Q

Pelvic floor

A

pelvic diaphragm
Supports viscera and aids voluntary control of urination and fecal continence
Made of levator ani and coccygeus

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10
Q

Levator ani

A

composed of puborectalis, pubococcygeus, and iliococcygeus

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11
Q

Puborectalis

A

Levator ani

muscular sling arising from pubis; maintains fecal continence

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12
Q

Pubococcygeus

A

Levator ani

arises from pubis & tendinous arch, attaches to coccyx

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13
Q

Iliococcygeus

A

Levator ani

arises from tendinous arch & ischial spine and blends with pubococcygeus

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14
Q

Coccygeus

A

ischial spine to coccygeus/sacrum

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15
Q

Apex of bladder

A

anterosuperior aspect

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16
Q

Fundus of bladder

A

posterior wall of bladder

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17
Q

Body of bladder

A

area between apex and fundus

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18
Q

Neck of bladder

A

constriction point

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19
Q

Trigone of bladder

A

triangle between ureteric and urethral openings

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20
Q

Walls of bladder

A

primarily detrusor muscles

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21
Q

Female urethra

A

descends anterior to vagina
urine exits via external urethral orifice
glands exit adjacent to urethra

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22
Q

Male urethra

A

longer, made of 4 parts
Preprostatic - neck of bladder to prostate
Prostatic - within prostate
Intermediate/Membranous - short, through external urethral sphincter
Spongy - longest, extends through penis

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23
Q

Infundibulum

A

funnel-shaped with fimbrae of uterine tube

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24
Q

Ampulla

A

widest and longest part of uterine tube

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25
Q

Isthmus

A

part of uterine tube entering uterine horns

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26
Q

Ovarian ligament

A

ovary to uterus

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27
Q

Round ligament

A

uterus to labia majora

28
Q

Broad ligament

A
mesentery of uterus
Suspensory ligament - conveys ovarian vessels, lymphatics, and nerves
Mesovarium - suspends ovary
Mesosalpinx - suspends uterine tube
Mesometrium - suspends most of uterus
29
Q

Vagina is innervated by

A

somatic (deep perineal branch of pudendal) in lower 1/4 and autonomic in upper 3/4

30
Q

Ductus deferentes

A

continuation of duct of epididymis
Ampulla - expansion of ductus deferens
Joins duct of seminal vesicle to form ejaculatory duct

31
Q

Seminal vesicles

A

paired glands secreting thick fluid into ejaculatory ducts

32
Q

Ejaculatory ducts

A

2 ducts formed by joining of seminal vesicle duct and ductus deferens, convergin upon the seminal colliculus of prostatic urethra
Descends through posterior prostate

33
Q

Prostate

A

accessory gland for male reproduction
Contains prostatic urethra
Divided into lobes

34
Q

Prostatic ducts

A

empty into prostatic sinuses on either side of seminal colliculus

35
Q

Bulbourethral glands

A

small glands secreting during sexual arousal

Ducts open into spongy urethra in bulb of penis

36
Q

Retropubic space

A

behind pubis, for bladder distension

37
Q

Retrorectal space

A

behind rectum

38
Q

Rectovesical pouch

A

in males, between bladder/prostate and rectum

39
Q

Vesicouterine pouch

A

in females, between bladder & uterus

40
Q

Rectouterine pouch

A

between uterus and rectum

41
Q

Anterior division of Internal iliac arteries

A

Umbilical, obturator, inferior vesicular, middle rectal, internal pudendal, inferior gluteal, uterine

42
Q

Posterior division of internal iliac arteries

A

Iliolumbar, lateral sacral, superior gluteal

43
Q

Sacral Plexus

A

Sciatic, Pudendal, Superior gluteal, and Inferior gluteal nerves

44
Q

Lumosacral trunk

A

(L4-L5)

45
Q

Sciatic nerve

A

L4-S3 to lower limb
anterior & posterior division
exits pelvis via greater sciatic foramen

46
Q

Pudendal nerve

A

S2-S4 to skin and muscles of perineum; main sensory nerve for external genitalia
Anterior division
Exits pelvis via greater sciatic foramen, enters perineum via lesser sciatic forament

47
Q

Superior gluteal nerve

A

L4-S1 to gluteus medius, minimus, & tensor fascia latae
Posterior division
exits pelvis via greater sciatic foramen

48
Q

Inferior gluteal

A

L5-S2 to gluteus maximus
Posterior division
Exits pelvis via greater sciatic foramen

49
Q

Coccygeal Plexus

A

small plexus from ventral rami of S4-S5 and coccygeal nerves

50
Q

Ganglion impar

A

end of sympathetic trunk - converges on anterior sacrum

51
Q

Pelvic sympathetics

A

arise from T11-L2 spinal segments, through lumbar and sacral splanchnic nerves
Synapse in inferior mesenteric ganglion
Travel through superior hypogastric plexus, R/L hypogastric nerves, and inferior hypogastric (pelvic) plexus to target organs

52
Q

Pelvic parasympathetics

A

From S2-S4, ascend mainly through inferior and superior hypogastric plexuses
Follow arteries to target organs & synapse in ganglia in organ plexus
Reach tragets via short postsynaptic fibers

53
Q

Iliolumbar a.

A

branch of posterior division of internal iliac a.

Runs up toward lumbar vertebra

54
Q

Lateral sacral a.

A

branch of posterior division of internal iliac a.

Runs across sacrum

55
Q

Superior Gluteal a.

A

branch of posterior division of internal iliac a.

Runs between lumbosacral trunk and S1

56
Q

Obturator a.

A

branch of anterior division of internal iliac a.

runs with obturator nerve toward obturator foramen - branches very early

57
Q

Umbilical a.

A

branch of anterior division of internal iliac a.
Has component with blood and component without blood
Gives rise to superior vesicular a. to superior surface of bladder

58
Q

Inferior Gluteal a.

A

branch of anterior division of internal iliac a.

Runs between S1 and S2

59
Q

Internal Pudendal a.

A

branch of anterior division of internal iliac a.
Runs to perineum - swoops around (out of pelvis through greater sciatic foramen & back in through lesser sciatic foramen)
Gives off inferior rectal a., deep and dorsal arteries of clitoris/penis

60
Q

Inferior rectal a.

A

branches from internal pudendal a.

61
Q

Deep and dorsal arteries of clitoris/penis

A

Branches from internal pudendal a.

62
Q

Uterine a.

A

in females, branch of anterior division of internal iliac a.
Runs to uterus
Gives rise to vaginal a. that runs to vagina

63
Q

Superior Vesical a.

A

Branch of umbilical a.

runs to superior surface of bladder

64
Q

Inferior vesical a.

A

branch of anterior division of internal iliac a.
runs to inferior surface of bladder
In males gives off a few branches to prostate gland

65
Q

Middle rectal a.

A

branch of anterior division of internal iliac a.

Runs deep and low

66
Q

Inferior epigastric a.

A

Branch of external iliac a.

Anastamoses with superior epigastric a.

67
Q

Deep circumflex iliac a.

A

Branch of external iliac a.

Runs laterally along iliac crest