Exam 4: Posterior Ab Wall Flashcards
(92 cards)
1
Q
Right crus of diaphragm originates from
A
Upper 3 lumbar vertebrae
2
Q
Right crus splits to enclose
A
Esophagus
3
Q
Weakness in Right crus causes
A
Hiatal hernia
4
Q
Left crus of diaphragm originates from
A
Upper 2 lumbar vertebrae
5
Q
Median arcuate lig connects
A
Right crus to left crus
6
Q
Median arcuate lig forms border of
A
Aortic hiatus (T12)
7
Q
Medial arcuate lig connects
A
Body of 1st lumbar to TP of 1st lumbar
8
Q
Medial arcuate lig passes over
A
Psoas major and sympathetic trunk
9
Q
Lateral arcuate lig connects
A
TP of 1st lumbar to 12th rib
10
Q
Lateral arcuate lig passes over
A
Quadratus lumborum
11
Q
Psoas major originates from TP and bodies of
A
T12-L5
12
Q
Psoas major innervation
A
L1-3 nerves
13
Q
Psoas minor muscle present in
A
60% of individuals
14
Q
Psoas minor muscle originates from bodies of
A
T12 and L1
15
Q
Innervation of psoas minor
A
L1 nerve
16
Q
Psoas sign
A
Pain produced when thigh is extended passively or when patient flexes hip
17
Q
Positive R psoas sign siggests
A
Acute appendicitis
18
Q
Quadratus lumborum is active in
A
Forced expiration
19
Q
Quadratus lumborum muscle innervation
A
Subcostal N
L1-4
20
Q
Quadratus lumborum muscle function
A
Depresses 12th rib
Flexes trunk laterally
21
Q
Lumbar plexus formed by
A
Anterior primary rami L1-3 and part of L4
22
Q
Branches of lumbar plexus
A
Iliohypogastric N Ilioinguinal N Genitofemoral N Lateral cutaneous N of thigh Femoral N Obturator N
23
Q
Iliohypogastric N (L1) supply
A
Sensory to skin covering pubis and gluteal
24
Q
Ilioinguinal N (L1) supply
A
Sensory to skin of scrotum (labia majora) and thigh
25
Genitofemoral nerve (L1,L2) branches
Genital branch
| Femoral branch
26
Genital branch of genitofemoral branch supply
Cremaster muscle (medial)
27
Femoral branch of genitofemoral nerve supply
Skin over femoral triangle (lateral)
28
Lateral cutaneous nerve of thigh (L2,L3) supply
Skin of anterior and lateral thigh
29
Femoral nerve (L2-4) supply
Muscles and skin of thigh
30
Obturator nerve (L2-4) supply
Muscles and skin of medial surface of thigh
31
Abdominal aorta passes through _____ and descends anterior to _____
Aortic hiatus
Vertebral bodies
32
Abdominal aorta bifurcates at what location
Anterior to L4
33
Abdominal aorta bifurcates into
L and R common iliac arteries
34
Common iliac artery bifurcates into
Internal iliac and external iliac arteries
35
Functions of pelvis
Locomotion
Parturition
Support of abdominal viscera
Protection of pelvic viscera
36
ASIS and upper margin of pubic symphysis lie in
Same VERTICAL plane
37
Tip of coccyx and upper margin of pubic symphysis lie in
Same HORIZONTAL plane
38
Pelvic inlet AKA
Superior aperture of pelvis
39
Greater/false pelvis function
Supports abdominal viscera
| Attachment for muscles of locomotion
40
Boundaries of pelvic inlet
Sacral promontory and alae, arcuate line, pecten pubis, pubic crest
41
Boundaries of the pelvic inlet form a continuous border known as
Pelvic brim
42
Pelvic brim divides pelvis into
Greater pelvis
| Lesser pelvis
43
Greater pelvis
Expanded upper portion of pelvis
44
Lesser pelvis AKA
Pelvic cavity proper
45
Lesser pelvis contains
Lower part GI tract
Urinary bladder
Lower part of ureter
Internal reproductive organs
46
Pelvic outlet AKA
Inferior aperture of pelvis
47
Pelvic outlet is _____ shaped
Diamond
48
Boundaries of pelvic outlet
```
Pubic symphysis
Ischiopubic rami
Ischial tuberosities
Sacrotuberous lig
Tip of coccyx
```
49
Pubic arch formed by
Pubic symphysis
Ischiopubic rami
Ischial tuberosities
50
Anthropoid pelvis
Long A-P diameter
Some males, 20% females
51
Platypelloid pelvis
Short A-P diameter
Wide transverse diameter
Rare in males, 2% females
52
Pelvis type most associated w/ birthing difficulties
Platypelloid
53
Android pelvis
Heart-shaped
Most males, 30% females
54
Gynecoid pelvis
Ovoid or round inlet
50% females, no males
55
Ideal pelvis for childbirth
Gynecoid pelvis
56
Lumbosacral joint
Between L5 and sacrum
Has IVD
57
Sacroiliac joint
Sacrum and ilium
Least mobile synovial joint
58
Pubic symphysis
Between 2 pubic bodies
Contains interpubic disc
59
Sacrococcygeal joint
Between sacrum and coccyx
Contains IVD, often fused
60
During pregnancy joints of pelvis become _____ due to ____
Loose; relaxin
61
Greater sciatic foramen boundaries
Greater sciatic notch
Sacrotuberous
Sacrospinous lig
62
Greater sciatic foramen lies _____ pelvic floor
Above
63
Most posterior structure in greater sciatic foramen
Piriformis muscle
64
Structures in both greater and lesser sciatic foramen
Internal pudendal vessels
Pudendal N
N to obturator internus muscle
65
Lesser sciatic foramen bounded by
Lesser sciatic notch
Sacrotuberous
Sacrospinous
66
Lesser sciatic foramen lies ____ pelvic floor
Below
67
Only structure that is only in lesser sciatic foramen
Tendon of obturator internus muscle
68
Lateral wall of pelvis covered by
Obturator internus muscle and obturator fascia
69
Bony framework of posterior wall
Sacrum and coccyx
70
Posterior wall is _____ anteriorly
Concave
71
Lateral portion of posterior wall covered by
Piriformis
| Coccygeus
72
Floor of pelvis composed of what structures
Peritoneum
| Pelvic diaphragm
73
Peritoneum reflects downward to form
Rectovesical pouch
Rectouterine pouch
Vesicouterine pouch
74
Rectovesical pouch between
Rectum and bladder
75
Lowest point in peritoneum in male
Rectovesical pouch
Blood and ascites accumulate here
76
Rectouterine pouch between
Rectum and uterus
77
Lowest point in peritoneum of female
Rectouterine pouch
Accumulation of blood, ascites and ectopic pregnancy
78
Vesicouterine pouch is between
Bladder and uterus
79
Two muscles pelvic diaphragm
Coccygeus
| Levator ani
80
Openings within pelvic diaphragm
Urogenital hiatus
| Anal aperture
81
Urogenital hiatus transmits
Urethra — males
Urethra and vagina — females
82
Parts of levator ani
Iliococcygeus
Pubococcygeus
Puborectalis
83
Most posterior part of levator ani
Iliococcygeus
84
Main part of levator ani
Pubococcygeus
85
Most medial fibers of pubococcygeus form
Puboprostaticus
Pubovaginalis
Puboanalis
86
Puboprostaticus forms a sling around
Urethra beneath prostate in male
87
Pubovaginalis forms a sling around
Urethra and vagina in female
88
Puboanalis attaches to
Anorectal junction
89
Puboprostaticus and pubovaginalis both function in
Micturition
90
Puborectalis unite behind anorectal junction to form
Puborectal sling
91
Puborectalis function
Maintain angle at anorectal junction
Relaxes during defecation
Directs fetal head during birth
92
Tendinous arch of levator ani
Curved thickening of obturator fascia
