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HK 3402 - Anatomy W15 > Pelvis > Flashcards

Pelvis Flashcards

1
Q

3 muscles of the Levator Ani?

A

puborectalis**
pubococcygeus
iliococcygeus

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2
Q

Levator Ani origin

A

posterior aspect of pubis
across obturator interns (as the tendinous arch)
ishial spine

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3
Q

Levator Ani insertion

A

perineal membrane
anal canal
anococcygeal ligament

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4
Q

Levator Ani action

A

suport pelvic contents

reinforces external anal sphincter

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5
Q

Levator Ani innervation

A

pudendal nerve & branches directly from S4

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6
Q

Pelvic diaphragm muscles?

- action?

A

levator ani (puborectalis, pubococcygeus, iliococcygeus)
and
coccygeus muscles

  • support and raise pelvic floor
  • pulls coccyx forward after deification
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7
Q

Greater Sciatic Foramen

  • location (pelvic diaphragm)?
  • passage from/to?
A

Superior to pelvic diaphragm

passage for structures to leave pelvic cavity and enter gluteal region

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8
Q

Lesser Sciatic Foramen

  • location (pelvic diaphragm)?
  • passage from/to?
A

Inferior to pelvic diaphragm

passage for structures to leave gluteal region and enter the perineum
- pudendal neurovascular bundle

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9
Q

Ligaments of the sacro-iliac joint

A

anterior, posterior and interoseous sacro-iliac ligament

  • interosseous deep to posterior
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10
Q

Interosseous sacro-iliac ligament can be found?

A

posterior side of pelvis

- deep to posterior sacroiliac ligament

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11
Q

How lumbar vertebrae attach to sacrum?

A

Inferior articular facet of lumbar with Superior articular facet of sacrum (S1)
- Facet Joint (on the posterior side)

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12
Q

Arcuate line becomes?

A

Pectineal Line or Pectin Pubis
(same thing)

*note: pectineal line of the femur also exists

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13
Q

10% of the population has what variation?

A

6 lumbar and 4 sacral vertebrae

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14
Q

Between the 2 pubis

A

pubic symphysis

- superior and inferior pubic ligament

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15
Q

Ligament between ischial spine and sacrum

- separates?

A

sacrospinous ligament

  • separates the greater and lesser sciatic foremen
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16
Q

Pelvic differences in males and females?

A

Pelvic inlet
Female: circular
Male: heart shaped

Pubic arch

female: 80-85* (thumb and index finger)
male: 50-60* (index and middle finger)

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17
Q

Ligament from ischium to sacrum?

- boney landmarks?

A

Sacrotuberous ligament

  • lower transverse sacral tuberosity to ischial tuberosity
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18
Q

Ligaments that prevent upward tilting of sacrum?

- location of ligaments?

A

Sacrospinous Ligament
- ischial spine to sacrum

Sacrotuberous Ligament
- ischial tuberosity to sacrum

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19
Q

1 muscle to remember of the levator ani

- travels?

A

Puborectalis

  • around anal sphincter
  • attaches to other side (posterior aspect of pubis)
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20
Q

Coccygeus origin

A

ischial spine and scarospinous ligament

21
Q

Coccygeus insertion

A

lateral border of coccyx and

inferior sacrum

22
Q

Coccygeus action

A

supports pelvic contents

- with levator ani

23
Q

Coccygeus innervation

A

branches from S3 and S4

24
Q

Difference between internal and external sphincter muscles

A

External -> skeletal muscle

Internal -> smooth (deeper)

25
Q

Psoas Major origin

A

lateral surface of T12-L5 vertebral bodies, transverse processes and IV discs

26
Q

Psoas Major insertion

A

lesser trochanter of femur

27
Q

Psoas Major action

A

hip flexion
external rotation
lateral flexion of trunk

28
Q

Psoas Major innervation

A

anterior branch of L1-L3

29
Q

Psoas Minor origin

A

lateral surface of T12-L1 vertebral bodies and IV discs

30
Q

Psoas Minor insertion

A

pectineal line of pelvis

31
Q

Psoas Minor action

A

(not sure)***

- lateral flexion of trunk?

32
Q

Psoas Minor innervation

A

anterior branch of L1

33
Q

Iliacus origin

A

upper 2/3 of iliac fossa
iliolumbar and anterior sacroiliac ligaments
upper antero-lateral surface of sacrum

34
Q

Iliacus insertion

A

lesser trochanter of femur

35
Q

Iliacus action

A

hip flexion, stabilization

acts with psoas major

36
Q

Iliacus innervation

A

femoral nerve (L2-L4)

37
Q

Quadratus Lumborum origin

A

Transverse process of lumbar vertabrae

Iliac crest

38
Q

Quadratus Lumborum insertion

A

Inferior border of rib 12

39
Q

Quadratus Lumborum action

A

extension and lateral flexion of vertebral column

40
Q

Quadratus Lumborum innervation

A

anterior branch of T12 and L1-L4

41
Q

Nerves of the Lumbar plexus

A 
iliohypogastric - (L1)
ilioinguinal - (L1)
genitofemoral - (L1,L2)
lateral femoral cutaneous - (L2,L3)
femoral - (L2,L3,L4)
obturator - (L2,L3,L4)

“2 i giants like funny ogres”

42
Q

Nerves of the sacral plexus

A 
lumbosacral trunk - (L4, L5)
superior gluteal - (L4, L5, S1)
inferior gluteal - (L5, S1, S2)
sciatic - (L4-S3)
pudendal - (S2, S3, S4)

“last semester I studied physics”

43
Q

Spinal nerves - difference between anterior and posterior roots

A

anterior roots = efferent
- motor output muscles

posterior roots = afferent
- sensory input

44
Q

Genitofemoral nerve path

A

pierces psoas major

- splits into genital part (medial) / femoral part (lateral)

45
Q

Femoral nerve path

A

deep to inguinal ligament

46
Q

Lateral femoral nerve path

A

across iliacus

47
Q

Obturator nerve path

A

exits hip cavity through obturator canal

48
Q

ilioinguinal nerve travels with

A

iliohypogastric nerve

HK 3402 - Anatomy W15 (6 decks)

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