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Clinical Anatomy 2 > Pelvis > Flashcards

Pelvis Flashcards

1
Q

Name the bony elements of the pelvic girdle

A
  • 2 innominate: ilium, ischium, pubis
  • sacrum
  • coccyx
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2
Q

Which structures form the boundaries of the pelvic inlet

A

pelvic inlet:

  1. sacral promonotory
  2. arcuate line
  3. pectineal line
  4. pubic symphysis

divides pelvis into greater (false) and lesser (true)

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3
Q

Describe the divisions of the pelvis

A
  1. abdominal cavity
  2. false greater pelvis
  3. true lesser pelvis
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4
Q

List the ways the male and female pelvis differ from one another

A 
male: 
subpubic angle 70 degrees
heart shaped inlet
narrow outlet
narrow cavity
narrow, convex sacrum
female: 
subpubic angle 90-100 degrees
oval shaped inlet
roomy outlet
roomy cavity
wide, flat sacrum
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5
Q

Name the four parts of the male urethra

A
  1. preprostatic (neck of bladder)
  2. prostatic
  3. membranous
  4. spongy
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6
Q

Describe the basic structure of the female internal reproductive organs

A

female gonads

-composed of dense fibrous tissue in which ova are produced and discharged from follicles (ovulation)

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7
Q

which structures form the pelvic outlet

A
  1. coccyx
  2. sacrotuberous lig
  3. sacrospinous lig
  4. ischial tuberosities
  5. pubic arch
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8
Q

Name the pelvic joints and the ligaments that cross them

A

SI joint and pubic symphysis
ligaments: stabilize SI joint

  1. Anterior sacroiliac ligaments
  2. sacrospinous ligament: good boundary between greater and lesser foramen
  3. sacrotuberous ligament
  4. iliolumbar
  5. anterior logitudinal
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9
Q

what kind of joint is the SI

A

plane

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10
Q

what kind of joints are the pubic symphysis and lumbosacral

A

symphysis

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11
Q

where does the iliacus attach

A

iliac fossa to lesser trochanter

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12
Q

what is the action of the iliacus

A

hip flexion

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13
Q

what is the innervation of the iliacus

A

femoral

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14
Q

what are the attachments of the psoas major

A

transverse processes T12-L4 to lesser trochanter

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15
Q

what is the innervation of the psoas major

A

ventral rami L1-3

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16
Q

what is the attachment of the piriformis

A

sacrum to greater trochanter

17
Q

what are the actions of the piriformis

A

lateral rotation

18
Q

what are the attachments of obturator internus

A

obturator membrane to greater trochanter

19
Q

what are the action of the obturator internus

A

lateral rotation

20
Q

what are the attachments of the coccygeus

A

sacrospinous ligament to coccyx

21
Q

what are the actions of coccygeus

A

support and compress pelvic floor

22
Q

what is the innervation of cocygeus

A

ventral rami S4-5

23
Q

what is the attachment of iliococcygeus

A

ichium and tendinous arch of obturator internus to coccyx and midline raphe

24
Q

what is the action of iliococcygeus

A

support pelvic viscera

25
Q

what is the innervation of iliococcygeus

A
  • levator ani nerve S4
  • inferior rectal n (pudendal S3-4)
  • coccygeal plexus
26
Q

what are the attachments of pubococcygeus

A

pubic and tendinous arch of obturator inernus to coccyx and midline raphe and walls of prostate or vagina

27
Q

what is the action of pubococcygeus

A

support pelvic viscera and compress vagina

28
Q

what is the innervation of pubococcygeus

A
  • levator ani nerve S4
  • inferior rectal n (pudendal S3-4)
  • coccygeal plexus
29
Q

what are the attachments of puborectalis

A

pubis and wall of rectum

30
Q

what is the action of puborectalis

A

maintain fecal continence

31
Q

what is the innervation of puborectalis

A

levator ani n S4

32
Q

what are the actions of bulbospongiosus

A

F: constricts vaginal orifice and erection of clit
M: empties urethra, erection, contracts during ejaculation

33
Q

what is the innervation of the bulbospongisosu

A

perineal brr of pudendeal n

34
Q

what is the action of the ischiocavernosus

A

compresses crus during erection

35
Q

what is the innervation of ischiocavernosus

A

perineal branch of pudendal

36
Q

what is the innervation of ext anal sphicnter

A

inferior rectal branch of pudendal

37
Q

what is the attachments of ext urethral sphincter

A

surrounds urethra

38
Q

what is the aciton of ext urethral sphincter

A

compresses uretha

39
Q

what is the innervatino of ext urethral sphincter

A

perineal br of pudendeal

Clinical Anatomy 2 (11 decks)

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