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GA Lecture NVB > Outline 12: the pelvis > Flashcards

Outline 12: the pelvis Flashcards

1
Q

How many bones make up the pelvis

A

3

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2
Q

what are the bones that make up the pelvis

A

2 os coxae and 1 sacrum

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3
Q

the body of the sacrum articulates with what

A

L5

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4
Q

what is the sacral iliac joint

A

the line where the sacrum meet the os coxae

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5
Q

compare and contrast the pelvic and pectoral girdle

A

the pelvic girdle compromises mobility for stability

the pectoral girdle compromises stability for mobility

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6
Q

what is the acetabulum

A

it is the socket for the hip joint

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7
Q

the acetabulum is analogous to what structure

A

the glenoid fossa (socket for the humerus)

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8
Q

what three bones contribute to the acetabulum

A

ilium
ischium
pubis

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9
Q

What bone is most superior in the pelvis

A

the ilium

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10
Q

what part of the ilium contributes to the acetabulum

A

the body

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11
Q

What has 3 gluteal lines on the posterior side

A

the ala

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12
Q

what is the top of the ala

A

the iliac crest

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13
Q

what is on the anterior superior end of the iliac crest

A

ASIS

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14
Q

what is on the posterior inferior end of the iliac crest

A

PSIS

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15
Q

what marks the beginning of the greater sciatic notch

A

PIIS

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16
Q

what is inferior to ASIS anteriorly

A

AIIS

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17
Q

what marks the connection between the ala and the body, where the angle of the ilium changes

A

the arcuate line

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18
Q

what marks the top of the superior pubic ramus. This like extends medially towards the pubic tubercle

A

pecten

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19
Q

what marks the lateral boundary of the pelvic inlet

A

linea terminalis (iliopectineal line= arcuate line + pecten)

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20
Q

What part of the ischium contributes to the acetabulum

A

the body

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21
Q

what is the medial projection of the ischial ramus

A

Ischial spine

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22
Q

what is the inferior terminus of the ischial ramus

A

ischial tuberosity

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23
Q

what demarcates the boundary between the greater sciatic notch and the lesser sciatic notch

A

the ischial spine

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24
Q

what contributes to the acetabulum in the pubis

A

the superior ramus

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25
Q

Does the body of one pubis meet the body of the second at any point? If so, where?

A

Yes; at the pubic symphysis

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26
Q

what is the top of the body of the pubis

A

the pubic crest

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27
Q

what is the boundary between the body and the superior ramus of the pubis

A

the tubercle of the pubis

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28
Q

Which structure meets the ischium at the ischial tuberosity?

A

Inferior pubic ramus

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29
Q

what meets anteriorly at the pubic symphysis

A

os coxae

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30
Q

the os coxae articulate posteriorly with ______

A

sacrum

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31
Q

The obturator foramen is between which two bones?

A

Between pubis and ischium

32
Q

what is the obturator foramen covered by

A

the obturator membrane

33
Q

The small opening in the Obturator membrane is called (X). What travels through it?

A

X = Obturator canal

obturator nerves and vessels run through

34
Q

the ASIS is horizontally in the same plane as the ______

A

PSIS

35
Q

the ASIS is vertically in the same plane as _______

A

pubic tubercle

36
Q

What marks the upper border of the pelvis

A

the pelvic brim/aperture/inlet

37
Q

what is the lateral border of the pelvic inlet

A

iliopectineal line

38
Q

what is the posterior border of the pelvic inlet

A

sacral promontory

39
Q

what is the anterior border of the pelvic inlet

A

top of pubis

40
Q

where is pelvis major and why is it “false pelvis”

A

it is between the ala of the ilium and above the pelvic inlet. So it is actually in the abdomen

41
Q

what is the anterior border of pelvis major

A

abdominal wall

42
Q

what is the lateral border of pelvis major

A

iliac fossae

43
Q

what is posterior border of pelvis major

A

L5 and S1

44
Q

what is the true pelvis

A

pelvis minor

45
Q

what is the superior border of Pelvis Minor

A

pelvic inlet

46
Q

what Is the inferior border of pelvis minor

A

pelvic diaphragm

47
Q

what is the posterior border of pelvis minor

A

sacrum and coccyx

48
Q

what is the anterior border of pelvis minor

A

pubis

49
Q

what is the lateral border of pelvis minor

A

obturator internus

50
Q

what are the contents of pelvis minor

A

bladder, rectum, urinary ducts, prostate, ovaries, uterus, vagina

51
Q

where is the pelvic diaphragm suspended

A

inferior pelvic aperture/ pelvic outlet

52
Q

what is the external surface of the pelvic outlet

A

perineum

53
Q

what does the perineum contain

A

external genitilia

54
Q

what is on the outside of the obturator membrane

A

obturator internus

55
Q

name 3 ways the female pelvis is different from the male pelvis

A

wider pubic arch with shallower subpubic angle
larger pelvic inlet
thinner bone in iliac fossae

56
Q

what are the two joints in the vertebral column (in the pelvic area)

A

L5:sacrum
sacrum:coccyx

57
Q

what kind of joint(s) is/are found between L5:sacrum

A

Anterior: symphysis between the bodies
Posterior: plane between the arches

58
Q

what kind of joint(s) is/are found between the sacrum:coccyx

A

only symphysis joints (because the arches and the bodies of the sacrum are fused)

59
Q

Which ligaments are like a continuation of the Anterior Longitudinal Ligament and Posterior Longitudinal Ligament? They act to:

A

Sacrococcygeal ligaments; reinforce the vertebrae/sacrum/coccyx

60
Q

How many pelvic joints are there? Name them

A

3 total

(1) pubic symphysis
(2) sacro-iliac joints

61
Q

The pubic symphysis joint is (anterior/posterior), between which bones?

A

anterior; the two os coxae

62
Q

what two ligaments reinforce the pubic symphysis joints?

A

superior pubic ligament

arcruate pubic ligament

63
Q

what does the superior pubic ligament connect

A

pubic tubercles

64
Q

what do the arcuate pubic ligaments connect

A

os coxae

65
Q

the sacro-iliac joints are (anterior/posterior) and come between which bones

A

posterior; os coxae and the sacrum

66
Q

list the things that contribute to the stability of the sacro-iliac joints

A

the irregularities on the sacrum surface
the wedge shape of the sacrum
ligaments

67
Q

what kind of joint is the sacro-iliac joint

A

plane joint (diarthrosis covered by hyaline cartilage)

68
Q

what two ligaments reinforce the joint capsule of the sacro-iliac joint

A

ventral/anterior Sacroilial ligaments

posterior sacroiliac ligaments

69
Q

What is the strongest ligament

A

interosseous Sacroiliac ligament

70
Q

where are the interosseous sacroiliac ligaments?

A

?????????

BETWEEN THE BONES OF THE OS COXAE AND SACRUM BUT WHERE EXACTLY AND WHY ISNT THIS PART OF THE JOINT CAPSULE???

71
Q

what prevents lumbar vertebrae from sliding forward on the sacrum

A

iliolumbar ligaments

72
Q

what does the iliolumbar ligament connect

A

ilia to the transverse processes of L5

73
Q

what does the sacrotuberous ligaments connect

A

posterior sacrum to ischial tuberosity

74
Q

what do the sacrospinous ligaments connect

A

anterior sacrum to ischial spine

75
Q

what demarcates the greater and lesser sciatic notches

A

the ischial spine

76
Q

What (enter(s)/exit(s)) the pelvis through the greater (Y)?

A

Sacral plexus nerves; exit pelvis; Y = sciatic foramen

77
Q

The lesser (X) serves as an (entry into/exit out of) the pelvis for…

A

X = sciatic foramen; entry into pelvis; pudendal nerve and nerve to obturator internis

GA Lecture NVB (12 decks)

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