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MBBCh 2- ANAT2020A > Body Pelvis (2) > Flashcards

Body Pelvis (2) Flashcards

1
Q

What does the pubis consist of? (3)

A
  • Body
  • Superior ramus
  • Inferior ramus
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2
Q

Pubis
* Superior ramus
- Contributes to…

A
  • Contributes to the acetabulum
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3
Q

Pubis
* Inferior ramus
- Contributes to…

A
  • Contributes to obturator foramen
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4
Q

What is the shape of the body of the pubis?

A
  • Flat, quadrangular bone
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5
Q

Pubis: Body
___ borders, ___ surfaces

A

3
3

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6
Q

Pubis: Body
- Lateral border:

A
  • Lateral border:
    contributes to obturator
    foramen
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7
Q

Pubis: Body
* Inferior border:

A
  • Inferior border:
    continuous inferior
    ramus
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8
Q

Pubis: Body
* Superior border:

A
  • Superior border: pubic
    crest ends pubic
    tubercle
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9
Q

Pubis: Body
* Medial surface:

A
  • Medial surface: forms
    pubic symphysis,
    attached by interpubic
    disc (fibro-cartilaginous
    joint)
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10
Q

Pubis: Body
* Anterior surface:

A
  • Anterior surface:
    directed adductor
    compartment (5
    muscles)
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11
Q

Pubis: Body
* Posterior surface:

A
  • Posterior surface:
    separated from bladder
    by retropubic space
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12
Q

Pubis: Superior ramus
* 1/5 of ________

A
  • 1/5 of acetabulum
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13
Q

Pubis: Superior ramus
* _ borders, _ surfaces

A

3
3

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14
Q

Pubis: Superior ramus
* Anterior border -

A
  • Anterior border - obturator crest
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15
Q

Pubis: Superior ramus
* Inferior border -

A
  • Inferior border - sharp - upper margin of obturator
    foramen
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16
Q

Pubis: Superior ramus
* Pectineal/superior surface:

A
  • Pectineal/superior surface – almost triangular
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17
Q

Pubis: Superior ramus
* Posterior surface –

A
  • Posterior surface – lies in relation retropubic space
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18
Q

Pubis: Superior ramus
* Inferior surface –

A
  • Inferior surface – roof for tunnel
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19
Q
  • Inferior ramus – _______ ramus
A

Ischiopubic

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20
Q

Acetabulum
* Cavity –

A

head of femur

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21
Q

Acetabulum
- ____ joint

A

Hip

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22
Q

Acetabulum
* Formed by: (3)

A

ilium, ischium, pubis

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23
Q

Acetabulum
* Space in between =

A

= acetabular notch – transverse ligament

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24
Q

Acetabulum

  • Acetabular _____
A

fossa

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25
Q
  • Acetabular margin
  • Acetabular ____
A

labrum

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26
Q

What are the acetabulum surround?

A
  • Surrounds head of femur
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27
Q

What are the functions of the pelvis? (4)

A
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28
Q

What is the pelvis separated into? (2)

A
  • Separated into two parts
  • False/Greater pelvis
  • True/Lesser pelvis
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29
Q

What is the false/greater pelvis?

A
  • Wide upper part of pelvic girdle
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30
Q
  • False/Greater pelvis
  • Lateral border :
A
  • Lateral border - alae of ilium
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31
Q
  • False/Greater pelvis
  • Posterior border:
A
  • Posterior border - lower lumbar vertebrae
32
Q
  • False/Greater pelvis
  • Anterior border :
A
  • Anterior border - abdominal wall
33
Q
  • True/Lesser pelvis
  • Anterior wall -
A
  • Anterior wall - 2 pubic bones with rami
34
Q
  • True/Lesser pelvis
  • Lateral wall -
A
  • Lateral wall - ischia with rami and acetabulum
35
Q
  • True/Lesser pelvis
  • Posterior wall -
A
  • Posterior wall - sacrum and coccyx
36
Q

What 3 areas of the pelvis?

A
  • Inlet, cavity and outlet
37
Q

Pelvis - Inlet
* Formed or bordered by:

A
  • Pubis symphysis
  • Pubic crest
  • Pubic tubercle
  • Pectineal line
  • Iliopubic eminence
  • Arcuate line
  • Ala
  • Promontorium
38
Q

Pelvis - Outlet
* Formed or bordered by: (5)

A
  • Pubic symphysis
  • Inferior ramus of pubis and ischium (pubic arch)
  • Ischial tuberosity
  • Sacrotuberous lig.
  • Coccyx
39
Q

FEMALE vs MALE (9)

A
40
Q

Joints of the pelvis

What type of joint is the Pubic Symphysis?

A
  • Cartilaginous joint
41
Q

Joints of the pelvis:

  • Pubic Symphysis
  • Bony elements:
A

2 pubic bones

42
Q

Joints of the pelvis
* Pubic Symphysis -
* Fibrocartilaginous disc =

A

= interpubic disc

43
Q

Joints of the pelvis
* Pubic Symphysis -
Movement =

A
  • Limited movement is possible
44
Q

Joints of the pelvis
* Sacroiliac joint
What type of joint is this?

A
  • Synovial joint
45
Q

Joints of the pelvis
* Sacroiliac joint
Ligaments:

A
  • Sacro-iliac ligaments
46
Q

Joints of the pelvis
* Sacroiliac joint
* Bony elements:

A

Ala of sacrum + articular surface on ilium

47
Q

Joints of the pelvis
* Sacroiliac joint
Movement:

A
  • Movement minimal
48
Q
  • Sacrotuberous ligaments
    What does it consist of? (2)
A
  • Sacrum and ischial tuberosity
49
Q
  • Sacrospinous ligaments
    What does it consist of? (2)
A
  • Sacrum and ischial spine
50
Q
  • Ligaments change the greater and lesser _____ _____ into the foramina
A

sciatic notches

51
Q
  • Obturator membrane attaches onto…
A

the obturator foramen

52
Q
  • Anteroinferior pelvic wall
  • Bodies & rami:
A

pubic bones & symphysis

53
Q
  • Anteroinferior pelvic wall

What is the function of this?

A
  • Bears weight of bladder
54
Q
  • Lateral pelvic walls
  • Obturator foramen:
A
  • Obturator foramen: obturator membrane
55
Q
  • Lateral pelvic walls
  • ______ _______muscle
  • ______ fascia
A
  • Obturator internus muscle
  • Obturator fascia
56
Q
  • Posterior pelvic wall
  • Ligaments:
A
  • Ligaments (ant. sacropelvic, sacrospinous & sacrotuberous)
56
Q
  • Posterior pelvic wall
    Muscle:
A
  • Piriformis muscle
57
Q

What are the muscles of the pelvic floor (pelvic diaphragm)? (2)

A
  • Coccygeus muscle
  • Levator ani muscle
58
Q
  • Levator ani muscle
    Associated muscles: (3)
A
  • Puborectalis, pubococcygeus & iliococcygeus
59
Q

Obturator internus
* Origin:

A
  • Pelvic surface ilium,
    ischium & obturator
    membrane
60
Q

Obturator internus
* Insertion:

A
  • Greater trochanter
    (medial surface)
61
Q

Obturator internus
* Action:

A
  • Lateral rotation
62
Q

Obturator internus
* Innervation:

A
  • Nerve to obturator
    internus (L5, S1, S2)
63
Q

Piriformis
* Origin:

A
  • Pelvic surface: S2-S4
    segments, sup. margin
    greater sciatic notch &
    sacrotuberous lig.
64
Q

Piriformis
* Insertion:

A
  • Greater trochanter
    (superior border)
65
Q

Piriformis
* Action:

A
  • Lateral rotation
66
Q

Piriformis
* Innervation:

A
  • Ant. rami S1 & S2
67
Q

Coccygeus
* Origin:

A
  • Ischial spine
68
Q

Coccygeus
* Insertion:

A
  • Sacrum (inferior end)
    and coccyx
69
Q

Coccygeus
* Action:

A
  • Support pelvic viscera
70
Q

Coccygeus:
* Innervation:

A
  • Branches: S4 & S5 spinal
    nerves
71
Q

Levator ani (PR, PC, IC): (3)

A
  • Puborectalis (Puborectal sling)
  • Pubococygeus
  • Iliococcygeus
72
Q
  • Puborectalis (Puborectal sling)
  • Body of pubis →
A

Perineal body & rectum

73
Q
  • Pubococygeus
  • Body of pubis →
A

Anococcygeal lig.

74
Q
  • Iliococcygeus
  • Tendinous arch →
A

Anococcygeal lig.

75
Q

Levator ani

Action:

A
  • Support pelvic viscera
76
Q

Levator ani

Innervation:

A
  • Nerve to levator ani, inferior anal nerve & coccygeal plexus

MBBCh 2- ANAT2020A (60 decks)

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