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Human anatomy > Pelvis Part 2 > Flashcards

Pelvis Part 2 Flashcards

(75 cards)

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1
Q

male pelivs

A

smaller angle, thick and heavy bones, deeper

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2
Q

female pelvis

A

wider angle, thinner bones, wide and shallow set

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3
Q

pelvic diaphragm

A

-floor of pelvic cavity
-interrupted by the urogenital hiatus
-consists of levator ani and coccygeus

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4
Q

urogenital hiatus

A

allows passage of the urethra and vagina in women and membranous urethra in males

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5
Q

leavtor ani

A

-iliococcygeus, pubococcygeus, puborectalis
-supports and maintains position of pelvic organs

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6
Q

coccygeus

A

supports pelvic organs

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7
Q

puborectalis

A

forms sling around rectus at anorectal junction, keeps poop in

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8
Q

lateral pelvic wall

A

obturator internus and obturator membrane, inserts on femur

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9
Q

posterior pelvic wall

A

piriformis and sacral pelvis, femur

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10
Q

endopelvic fascia

A

consists of parietal fascia and visceral fascia

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11
Q

parietal fascia

A

covers the surface of the sacrum, coccyx, and muscles of the pelvic wall and floor

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12
Q

visceral fascia

A

uterosacral ligament, cardinal ligament

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13
Q

cardinal ligament

A

cervix to fascia of piriformis

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14
Q

uterosacral ligament

A

uterus to sacrum

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15
Q

pelvic spaces

A

parietal peritoneum from abdominal cavity extends into pelvic cavity and covers superior portions of pelvic viscera and creates recesses (pouches)

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16
Q

pouches

A

includes rectovesical pouch, vesicouterine pouch, and rectouterine pouch

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17
Q

rectovesical pouch

A

male, space between bladder and rectum

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18
Q

vesicouterine pouch

A

female, space between bladder and uterus

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19
Q

rectouterine pouch

A

female, space between rectum and uterus

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20
Q

internal iliac arteries

A

-supply pelvis and perineal structures
-divides into anterior and posterior divisions

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21
Q

anterior division of internal iliac artery

A

**viscera and organs
-obturator arteries
-middle rectal arteries
-uterine and vaginal arteries
-inferior vesical arteries
-superior vesical arteries
-internal pudendal arteries

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22
Q

posterior division of internal iliac artery

A

**think muscles
-iliolumbar arteries
-lateral sacral arteries
-superior gluteal arteries
-inferior gluteal arteries

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23
Q

venous drainage

A

series of venous plexuses surrounds pelvis viscera and generally drain into internal iliac vveins

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24
Q

gonads

A

drained by gonadal veins, right drains directly into inferior vena cava and left drains into left renal vein

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25
pelvic somatic innervation
-skeletal muscle and skin of the pelvis diaphragm, pelvic wall, and perineum are innervated by sacral plexus
26
sacral plexus
-anterior rami S1-S4 -receives contributions from lumbar spinal nerves via the lumbosacral trunk
27
two major branches off the sacral plexus
pudendal nerve and nerves to levator ani and coccygeus
28
pudendal nerve
S2-S4, voluntary motor for external anal and urethral sphincters, sensory of genitalia
29
nerves to levator ani and coccygeus
S3-S4, motor for pelvic diaphragm
30
pelvic autonomic innervation
smooth muscle and perineal vasculature innervated by sympathetic and parasympathetic autonomic plexuses
31
superior hypogastric plexus
continues as right and left hypogastric nerves that synapse w postgang fibers associated within inferior hypogastric plexus
32
how do postganglionic fibers travel
travel along arteries to pelvic and perineal viscera
33
what does superior hypogastric plexus do
-close sphincters -stimulates orgasm and ejaculation -opens sphincters -bladder emptying
34
pelvic viscera
portions of digestive, urinary, and reproductive systems that are contained within the lesser pelvis
35
rectum
-rectosigmoidal junction -lacks teniae coli and omental appendages - 3 transverse rectal folds -terminal part bends sharply posterior at anorectal flexure (become anal canal)
36
what keeps rectum in constant state of contraction
puborectalis, only relaxes while pooping
37
rectum supplied by
superior rectal arteries of inferior mesenteric, middle rectal arteries of anterior division of internal iliac
38
rectum drained by
rectal venous plexus and superior rectal vein, middle rectal vein and inferior rectal vein
39
ureters
-retroperitoneal muscular tubes connecting kidneys to urinary bladder -arise from renal pelvis within kidney hilum -pierces that lateral aspect of bladder wall in an oblique inferomedial angle
40
autonomic innervation of ureters
-renal, aortic, superior and inferior hypogastric plexuses
41
sesnory fibers from ureters enter spinal cord
-at T11-T12 -ureteric pain refer to dermatomes
42
urinary bladder
-muscular reservoir for urine -apex, fundus, neck, and body -trigone -detrusor muscle -median umbilical ligament
43
trigone
formed by ureters and internal urethral arteries
44
detrusor muscle
-contracts bladder during urination (smooth muscle, autonomic innervation) -contributes to internal urethral sphincter
45
median umbilical ligament
supports urinary bladder
46
urinary bladder supplied by
superior and inferior vesical arteries of internal iliac arteries
47
urinary bladder drained by
superior and inferior vesical veins
48
urethra
-begins at internal urethral orifice and ends at external urethral orifice -drains the bladder
49
female urethra
-short -travels through deep perineal pouch to the vestibule of the vagina
50
paraurethral glands
flank the urethra and aid in lubricating the vestibule
51
male urethra
-long -divided inot intramural, prosthetic, intermediate, and spongy portions -passes through prostate, deep perineal pouch, and corpus spongiosum
52
intramural urethra
passes through wall of urinary bladder before entering prostate
53
prosthetic urethra
receives secretions from vas deferens and seminal and prostate glands
54
intermediate urethra
-surrounded by external urethral sphincter -flanked by bulbourethral glands that empty secretions into spongy urethra
55
spongy urethra
expands within glands to form navicular fossa
56
fallopian tubes
-transports ovum from ovary to uterus -consist of infundibulum with fimbriae, ampulla, isthmus, and intramural segment
57
ampulla
where fertilization occurs
58
isthmus
narrowed region of fallopian tube
59
intramural segment of fallopian tube
portion contained within the wall of the uterus
60
uterus
-involved in implantation, gestation, menstruation, and labor -fundus, cornu, body, and cervix
61
curnu
uterine horn
62
cervix
protrudes into vagina and includes internal os, cervical canal, and external os
63
vagina
-between cervix to vestibule of vagina -provides passageway for blood and mucosal tissue during menstruation -where penis enters -passage for childbirth
64
fornix
protrusion of cervix into vagina
65
muscles that compress vagina
-pubovaginalis -external urethral sphincter -urethrovaginal sphincter -bulbospongiosus
66
cortex of ovary
ovarian follicles each containing an oocyte surrounded by a single layer of follicular cells
67
broad ligament for uterus
-forms pelvic wall attachment -mesometrium(uterine body), mesovarium(ovary), mesosalpinx(fallopian tube)
68
suspensory ligament
-continuous with broad ligament -supports position of ovaries -draped over ovarium arteries and veins
69
ligament of the ovary
attaches ovary to uterus
70
round ligament of uterus
-previously the gubernaculum -extends anterolaterally from uterus -travels through inguinal canal, and inserts into labia majora
71
ovaries, fallopian tubes, and uterus supplied by
uterine and ovarian arteries of anterior division of internal iliac arteries
72
superior vagina supplied by
vaginal arteries
73
inferior vagina supplied by
branches off internal pudendal arteries
74
ovary and vagina structures drained by
uterine venous plexus which drains into uterine veins of the iliac veins
75
inferior portion of vagina somatic innervation
deep perineal nerve of the pudendal nerve

Human anatomy (13 decks)

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