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Anatomy > Exam 4: Pelvis > Flashcards

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
Isthmus
part of uterine tube entering uterine horns
26
Ovarian ligament
ovary to uterus
27
Round ligament
uterus to labia majora
28
Broad ligament
``` mesentery of uterus Suspensory ligament - conveys ovarian vessels, lymphatics, and nerves Mesovarium - suspends ovary Mesosalpinx - suspends uterine tube Mesometrium - suspends most of uterus ```
29
Vagina is innervated by
somatic (deep perineal branch of pudendal) in lower 1/4 and autonomic in upper 3/4
30
Ductus deferentes
continuation of duct of epididymis Ampulla - expansion of ductus deferens Joins duct of seminal vesicle to form ejaculatory duct
31
Seminal vesicles
paired glands secreting thick fluid into ejaculatory ducts
32
Ejaculatory ducts
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
Prostate
accessory gland for male reproduction Contains prostatic urethra Divided into lobes
34
Prostatic ducts
empty into prostatic sinuses on either side of seminal colliculus
35
Bulbourethral glands
small glands secreting during sexual arousal | Ducts open into spongy urethra in bulb of penis
36
Retropubic space
behind pubis, for bladder distension
37
Retrorectal space
behind rectum
38
Rectovesical pouch
in males, between bladder/prostate and rectum
39
Vesicouterine pouch
in females, between bladder & uterus
40
Rectouterine pouch
between uterus and rectum
41
Anterior division of Internal iliac arteries
Umbilical, obturator, inferior vesicular, middle rectal, internal pudendal, inferior gluteal, uterine
42
Posterior division of internal iliac arteries
Iliolumbar, lateral sacral, superior gluteal
43
Sacral Plexus
Sciatic, Pudendal, Superior gluteal, and Inferior gluteal nerves
44
Lumosacral trunk
(L4-L5)
45
Sciatic nerve
L4-S3 to lower limb anterior & posterior division exits pelvis via greater sciatic foramen
46
Pudendal nerve
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
Superior gluteal nerve
L4-S1 to gluteus medius, minimus, & tensor fascia latae Posterior division exits pelvis via greater sciatic foramen
48
Inferior gluteal
L5-S2 to gluteus maximus Posterior division Exits pelvis via greater sciatic foramen
49
Coccygeal Plexus
small plexus from ventral rami of S4-S5 and coccygeal nerves
50
Ganglion impar
end of sympathetic trunk - converges on anterior sacrum
51
Pelvic sympathetics
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
Pelvic parasympathetics
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
Iliolumbar a.
branch of posterior division of internal iliac a. | Runs up toward lumbar vertebra
54
Lateral sacral a.
branch of posterior division of internal iliac a. | Runs across sacrum
55
Superior Gluteal a.
branch of posterior division of internal iliac a. | Runs between lumbosacral trunk and S1
56
Obturator a.
branch of anterior division of internal iliac a. | runs with obturator nerve toward obturator foramen - branches very early
57
Umbilical 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
Inferior Gluteal a.
branch of anterior division of internal iliac a. | Runs between S1 and S2
59
Internal Pudendal 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
Inferior rectal a.
branches from internal pudendal a.
61
Deep and dorsal arteries of clitoris/penis
Branches from internal pudendal a.
62
Uterine a.
in females, branch of anterior division of internal iliac a. Runs to uterus Gives rise to vaginal a. that runs to vagina
63
Superior Vesical a.
Branch of umbilical a. | runs to superior surface of bladder
64
Inferior vesical 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
Middle rectal a.
branch of anterior division of internal iliac a. | Runs deep and low
66
Inferior epigastric a.
Branch of external iliac a. | Anastamoses with superior epigastric a.
67
Deep circumflex iliac a.
Branch of external iliac a. | Runs laterally along iliac crest

Anatomy (20 decks)

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