Body Pelvis (2) Flashcards
(77 cards)
1
Q
What does the pubis consist of? (3)
A
- Body
- Superior ramus
- Inferior ramus
2
Q
Pubis
* Superior ramus
- Contributes to…
A
- Contributes to the acetabulum
3
Q
Pubis
* Inferior ramus
- Contributes to…
A
- Contributes to obturator foramen
4
Q
What is the shape of the body of the pubis?
A
- Flat, quadrangular bone
5
Q
Pubis: Body
___ borders, ___ surfaces
A
3
3
6
Q
Pubis: Body
- Lateral border:
A
- Lateral border:
contributes to obturator
foramen
7
Q
Pubis: Body
* Inferior border:
A
- Inferior border:
continuous inferior
ramus
8
Q
Pubis: Body
* Superior border:
A
- Superior border: pubic
crest ends pubic
tubercle
9
Q
Pubis: Body
* Medial surface:
A
- Medial surface: forms
pubic symphysis,
attached by interpubic
disc (fibro-cartilaginous
joint)
10
Q
Pubis: Body
* Anterior surface:
A
- Anterior surface:
directed adductor
compartment (5
muscles)
11
Q
Pubis: Body
* Posterior surface:
A
- Posterior surface:
separated from bladder
by retropubic space
12
Q
Pubis: Superior ramus
* 1/5 of ________
A
- 1/5 of acetabulum
13
Q
Pubis: Superior ramus
* _ borders, _ surfaces
A
3
3
14
Q
Pubis: Superior ramus
* Anterior border -
A
- Anterior border - obturator crest
15
Q
Pubis: Superior ramus
* Inferior border -
A
- Inferior border - sharp - upper margin of obturator
foramen
16
Q
Pubis: Superior ramus
* Pectineal/superior surface:
A
- Pectineal/superior surface – almost triangular
17
Q
Pubis: Superior ramus
* Posterior surface –
A
- Posterior surface – lies in relation retropubic space
18
Q
Pubis: Superior ramus
* Inferior surface –
A
- Inferior surface – roof for tunnel
19
Q
- Inferior ramus – _______ ramus
A
Ischiopubic
20
Q
Acetabulum
* Cavity –
A
head of femur
21
Q
Acetabulum
- ____ joint
A
Hip
22
Q
Acetabulum
* Formed by: (3)
A
ilium, ischium, pubis
23
Q
Acetabulum
* Space in between =
A
= acetabular notch – transverse ligament
24
Q
Acetabulum
- Acetabular _____
A
fossa
25
* Acetabular margin
- Acetabular ____
labrum
26
What are the acetabulum surround?
* Surrounds head of femur
27
What are the functions of the pelvis? (4)
28
What is the pelvis separated into? (2)
* Separated into two parts
- False/Greater pelvis
- True/Lesser pelvis
29
What is the false/greater pelvis?
* Wide upper part of pelvic girdle
30
* False/Greater pelvis
- Lateral border :
* Lateral border - alae of ilium
31
* False/Greater pelvis
- Posterior border:
* Posterior border - lower lumbar vertebrae
32
* False/Greater pelvis
- Anterior border :
* Anterior border - abdominal wall
33
* True/Lesser pelvis
* Anterior wall -
* Anterior wall - 2 pubic bones with rami
34
* True/Lesser pelvis
* Lateral wall -
* Lateral wall - ischia with rami and acetabulum
35
* True/Lesser pelvis
* Posterior wall -
* Posterior wall - sacrum and coccyx
36
What 3 areas of the pelvis?
* Inlet, cavity and outlet
37
Pelvis - Inlet
* Formed or bordered by:
* Pubis symphysis
* Pubic crest
* Pubic tubercle
* Pectineal line
* Iliopubic eminence
* Arcuate line
* Ala
* Promontorium
38
Pelvis - Outlet
* Formed or bordered by: (5)
* Pubic symphysis
* Inferior ramus of pubis and ischium (pubic arch)
* Ischial tuberosity
* Sacrotuberous lig.
* Coccyx
39
FEMALE vs MALE (9)
40
Joints of the pelvis
What type of joint is the Pubic Symphysis?
* Cartilaginous joint
41
Joints of the pelvis:
* Pubic Symphysis
- Bony elements:
2 pubic bones
42
Joints of the pelvis
* Pubic Symphysis -
* Fibrocartilaginous disc =
= interpubic disc
43
Joints of the pelvis
* Pubic Symphysis -
Movement =
* Limited movement is possible
44
Joints of the pelvis
* Sacroiliac joint
What type of joint is this?
* Synovial joint
45
Joints of the pelvis
* Sacroiliac joint
Ligaments:
* Sacro-iliac ligaments
46
Joints of the pelvis
* Sacroiliac joint
* Bony elements:
Ala of sacrum + articular surface on ilium
47
Joints of the pelvis
* Sacroiliac joint
Movement:
* Movement minimal
48
* Sacrotuberous ligaments
What does it consist of? (2)
* Sacrum and ischial tuberosity
49
* Sacrospinous ligaments
What does it consist of? (2)
* Sacrum and ischial spine
50
* Ligaments change the greater and lesser _____ _____ into the foramina
sciatic notches
51
* Obturator membrane attaches onto...
the obturator foramen
52
* Anteroinferior pelvic wall
* Bodies & rami:
pubic bones & symphysis
53
* Anteroinferior pelvic wall
What is the function of this?
* Bears weight of bladder
54
* Lateral pelvic walls
* Obturator foramen:
* Obturator foramen: obturator membrane
55
* Lateral pelvic walls
* ______ _______muscle
* ______ fascia
* Obturator internus muscle
* Obturator fascia
56
* Posterior pelvic wall
* Ligaments:
* Ligaments (ant. sacropelvic, sacrospinous & sacrotuberous)
56
* Posterior pelvic wall
Muscle:
* Piriformis muscle
57
What are the muscles of the pelvic floor (pelvic diaphragm)? (2)
* Coccygeus muscle
* Levator ani muscle
58
* Levator ani muscle
Associated muscles: (3)
* Puborectalis, pubococcygeus & iliococcygeus
59
Obturator internus
* Origin:
* Pelvic surface ilium,
ischium & obturator
membrane
60
Obturator internus
* Insertion:
* Greater trochanter
(medial surface)
61
Obturator internus
* Action:
* Lateral rotation
62
Obturator internus
* Innervation:
* Nerve to obturator
internus (L5, S1, S2)
63
Piriformis
* Origin:
* Pelvic surface: S2-S4
segments, sup. margin
greater sciatic notch &
sacrotuberous lig.
64
Piriformis
* Insertion:
* Greater trochanter
(superior border)
65
Piriformis
* Action:
* Lateral rotation
66
Piriformis
* Innervation:
* Ant. rami S1 & S2
67
Coccygeus
* Origin:
* Ischial spine
68
Coccygeus
* Insertion:
* Sacrum (inferior end)
and coccyx
69
Coccygeus
* Action:
* Support pelvic viscera
70
Coccygeus:
* Innervation:
* Branches: S4 & S5 spinal
nerves
71
Levator ani (PR, PC, IC): (3)
* Puborectalis (Puborectal sling)
* Pubococygeus
* Iliococcygeus
72
* Puborectalis (Puborectal sling)
* Body of pubis →
Perineal body & rectum
73
* Pubococygeus
- Body of pubis →
Anococcygeal lig.
74
* Iliococcygeus
- Tendinous arch →
Anococcygeal lig.
75
Levator ani
Action:
* Support pelvic viscera
76
Levator ani
Innervation:
* Nerve to levator ani, inferior anal nerve & coccygeal plexus
