the perineum Flashcards

1
Q

what is the perineum

A
  • lies inferior to the pelvic floor, between the lower limbs
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2
Q

what is the perineum formed by?

A

formed from soft tissue inferior to the pelvic floor, ending with skin

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3
Q

pelvic floor muscles and features

A
  • obturator internus
  • levator ani
  • coccygeus
  • piriforms
  • rectal hiatus
  • urogential hiatus
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4
Q

bords of the perineum

A

inferior: ischiopubic ramus
posterior: coccyx/sacrum
anterior: pubic symphysis
lateral: ischial tuberosity

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5
Q

triangles of the perineum

A
  • urogential triangle
  • anal triangle
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6
Q

urogential triangle

A
  • anterior portion of perineum
  • bounded by:
    pubic symphysis
    ischial tuberosities
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7
Q

anal triangle

A
  • posterior portion of perineum
  • bounded by:
    ischial tuberosities
    coccyx
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8
Q

male genitalia

A
  • penis
  • scrotum
  • urethra
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9
Q

penis

A

body of penis
- glans
- corpus cavernosum
- corpus spongiosum

root of penis
- bulb
- crus

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10
Q

what artery is in the corpus caverosum

A
  • deep penile artery
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11
Q

what is in the corpus spongiosum

A

urethra

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12
Q

male: urethra

A

bladder–> prostates= prostatic urethra
membranous urethra

corpus spongiosum=spongy urethra

external urethra orifice

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13
Q

female genitalia

A

prepuce of clitoris
labia major
labia minor
mons pubis
clitoris

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14
Q

female stuff- vestibule borders

A

clitoris = anterior border
labia minora= lateral border
fourchette= posterior border

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15
Q

female stuff- vestibule parts

A
  • external urethral orifice
  • vaginal orifice
  • bulb of vestibule
  • greater vestibular glands
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16
Q

erectile tissue- root

A

crus of clit
greater vestibular gland
bulb of vestibule (fills with blood)

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17
Q

erectile tissue- bodyF

A
  • glans of clit
  • body of clit
18
Q

urethra muscles: female

A
  • external urethral sphincter (entire urethra)
  • urethrovaginal sphincter (urethra and vagina)
  • compressor urethrae (anteior urethra)
19
Q

urogential triangle: make up

A

superficial to deep
- skin
- perineal fascia
- superficial perineal pouch
- perineal membrane
- deep perineal pouch
- pelvic floor

20
Q

deep perineal pouch

A
  • between pelvic floor superiorly, and perineal membrane inferiorly
  • lies SUPERIOR the perineal membrane
  • forms the external urethral sphincter
21
Q

deep perineal pouch: males

A

deep transverse perineal muscle

external urethra sphincter

22
Q

external urethra sphincter

A
  • voluntary control
  • surrounds membranous urethra
23
Q

deep perineal pouch: female

A
  • external urethral sphincter
  • urethrovaginal sphincter
  • compressor urethrae
  • deep transverse perineal muscles
24
Q

perineal membrane

A

separates deep perineal pouch and superficial perineal pouch

25
Q

superficial perineal pouch

A
  • between perineal mem superiorly, and deep perineal fascia inferiorly
  • lies INFERIORLY to the perineal mem
  • superior limit–> perineal mem
  • inferior limit–> colles fascia
26
Q

superficial perineal pouch: males

A

bulbospongious
ischocaverosus
superficial transverse perineal muscle

27
Q

bulbospongious

A

compresses bulb of penis during erection

28
Q

ischocaverosus

A

compresses crus of penis during erection

29
Q

superficial perinal pouch: females

A

ischocaverosus
bulbospongiosus
superficial transverse perineal muscles

30
Q

ischocaverosus

A

compresses crus of clit during orgasm

31
Q

bulbospongiosus

A

compresses bulb of clit during orgasm

32
Q

perineal fascia superficial layer

A

continuous with campers fascia of anterior abdominal wall

33
Q

perineal fascia deep layer

A

continous with scarpas fascia of the anterior abdominal wall

  • colles fascia
34
Q

perineal body

A

convergence/interlacing of:
- bulbospongiosus
- superficial/deep perineal muscles
- external anal sphincter
- pelvic floor muscles

35
Q

contents of anal triangle

A
  • anal aperture
  • external anal sphincter
  • ischiorectal fossa
  • pudendal canal
36
Q

ischiorectal fossa

A
  • obturator internus= lateral border
  • levator ani= superior border
  • external anal sphincter= medial border
  • perineal fascia= inferior border
37
Q

pudendal canal

A

neurovasculature
- pudenal nerve
- interal pudendal artery
- internal pudenal vein

38
Q

anal canal

A

external anal sphincter = voluntary

internal anal sphincter = involuntary (relaxed norally)

  • rectal ampulla
39
Q

blood supply- perineum

A

abdominal aorta
common iliac artery
external iliac artery
internal iliac artery
- internal iliac artery
- internal pudendal artery

40
Q
A