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Anatomy 207 > Bony Pelvis > Flashcards

Bony Pelvis Flashcards

1
Q

Formation

A

Consists of 4 bones:
1. 2 hip bones
2. Sacrum
3. Coccyx
Bounded together by 4 joints and strong ligaments

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2
Q

Formation: in front

A

2 hip bones articulate at symphysis pubis

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3
Q

Formation: behind

A

Each hip bone articulates with sacrum at sacroiliac joint

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4
Q

Formation: behind and below

A

Sacrum articulates with coccyx at sacrococcygeal joint

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5
Q

Anatomical position

A
  1. During standing, ASIS and symphysis pubis upper border lie in same vertical plane
  2. Pelvic inlet plane makes an angle 50-60 degrees with horizontal plane
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6
Q

Pelvic inlet: in front

A
  1. Symphysis pubis
  2. Pubic crest
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7
Q

Pelvic inlet: lateral

A

Iliopectineal lines

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8
Q

Pelvic inlet: behind

A
  1. Sacrum Ala
  2. Promontory
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9
Q

Pelvic outlet

A

Corresponds to perineum region which is trunk lower end

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10
Q

Pelvic outlet: shape

A

Diamond

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11
Q

Pelvic outlet: anterior

A

Symphysis pubis lower border

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12
Q

Pelvic outlet: on each side

A
  1. Ischiopubic rami
  2. Ischial tuberosity
  3. Sacrotuberous ligaments
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13
Q

Pelvic outlet: posterior

A

Coccyx tip

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14
Q

Pelvic cavity divisions

A

Inlet plane divides pelvic cavity into:
1. False (greater) pelvis
2. True (lesser) pelvis

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15
Q

False pelvis

A
  1. Above pelvic inlet
  2. Contains pelvic viscera
  3. Bounded on each side by iliac fossa
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16
Q
A
  1. Below pelvic inlet
  2. Contains pelvic viscera
  3. It has upper opening (pelvic inlet) and lower opening (pelvic outlet)
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17
Q

True pelvis boundries

A
  1. Anteroinferior: symphysis pubis and pubic rami
  2. Posterior: sacrum and coccyx
  3. Lateral: pelvic aspect of fused ilium and ischium
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18
Q

Diameters

A
  1. Anteroposterior
  2. Transverse
  3. Oblique
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19
Q

Anteroposterior diameters of inlet

A

Between
1. Midpoints of sacral promontory
and
2. Symphysis pubis upper border

20
Q

Anteroposterior diameters of cavity

A

Between
1. Midpoints of S3 vertebra and
2. Symphysis pubis posterior surface

21
Q

Anteroposterior diameters of outlet

A

Between
1. Coccyx apex
To
2. Midpoint of symphysis pubis lower border

22
Q

Transverse diameters of inlet

A

Maximum distance between similar points on opposite sides of pelvic brim

23
Q

Transverse diameters of cavity

A

Widest transverse distance between cavity side walls

24
Q

Transverse diameters of outlet

A

Between 2 ischial tuberosities medial borders

25
Q

Oblique diameters of inlet

A

From
1. Iliopubic (iliopectineal) eminence
To
2. Opposite sacroiliac joint

26
Q

Oblique diameters of cavity

A

From
1. One sacroiliac joint lowest point
To
2. Contralateral Obturator membrane midpoint

27
Q

Oblique diameters of outlet

A

From
1. One side sacrotuberous ligament midpoint
To
2. Contralateral ischiopubic junction

28
Q

Anteroposterior diameters: inlet male

A

10 cm

29
Q

Anteroposterior diameters: inlet female

A

11 cm

30
Q

Anteroposterior diameters: outlet male

A

8 cm

31
Q

Anteroposterior diameters: outlet female

A

12.5 cm

32
Q

Anteroposterior diameters: cavity male

A

10.5 cm

33
Q

Anteroposterior diameters: cavity female

A

13 cm

34
Q

Transverse diameters: inlet male

A

12.5 cm

35
Q

Transverse diameters: inlet female

A

13 cm

36
Q

Transverse diameters: outlet male

A

8.5 cm

37
Q

Transverse diameters: outlet female

A

11 cm

38
Q

Transverse diameters: cavity male

A

12 cm

39
Q

Transverse diameters: cavity female

A

12.5 cm

40
Q

Oblique diameters: inlet male

A

12 cm

41
Q

Oblique diameters: inlet female

A

12.5

42
Q

Oblique diameters: outlet male

A

10 cm

43
Q

Oblique diameters: outlet female

A

12 cm

44
Q

Oblique diameters: cavity male

A

11 cm

45
Q

Oblique diameters: cavity female

A

13 cm

Anatomy 207 (100 decks)

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