Bones, ligaments, and muscles of the pelvis Flashcards

1
Q

What does the greater pelvis contain?

A

contains abdominal organs instead of pelvic organs
and provides support for abdominal organs

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2
Q

Greater pelvis is also called the…

A

false pelvis

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3
Q

Greater pelvis is _____ to the lesser pelvis

A

superior

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4
Q

What does the lesser pelvis contain

A

pelvic organs like bladder, rectum, reproductive organs, prostate
and supports organs and forms birth canal in females

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5
Q

Lesser pelvis is also called the…

A

true pelvis

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6
Q

The lesser pelvis is _____ to the greater pelvis

A

inferior

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7
Q

What is the pelvic inlet?

A

entrance into the pelvis and marks the division of the greater and lesser pelvis

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8
Q

The greater pelvis lies ____ the pelvic inlet

A

above

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9
Q

The lesser pelvis lies ____ pelvic inlet and _____ to pelvic outlet

A

above; extends

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10
Q

Pelvic brim is a landmark between the lesser and greater pelvis. It _______ pelvic inlet, its a bony edge, and defines it

A

surrounds

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11
Q

Once you go below pelvic diaphragm, then you are in the _____

A

perineal

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12
Q

pelvic inlet and outlet mark entry and exit points of which pelvis?

A

lesser pelvis/ true pelvis

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13
Q

pelvic outlet marks opening where what sits?

A

pelvic floor

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14
Q

perineum lies ____ the true pelvic cavity

A

outside

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15
Q

perineum is the region ___ pelvic diaphragm

A

below

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16
Q

Ilium is ____ to the ischium

A

superior

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17
Q

Ilium has what types of spines?

A

anterior superior iliac spine and posterior superior iliac spine

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18
Q

The hip bones articulate ____ with the sacrum at the SI joint to form the pelvic girdle

A

posteriorly

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19
Q

The right and left hip bones are joined anteriorly at the …

A

pubic symphysis

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20
Q

sacrum is ___ fused vertebrae

A

5

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21
Q

coccyx is also known as your

A

tail bone

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22
Q

ilium contains an ala and body. The Ala and body are referred to as what

A

ala- wing of fan
body- handle of the fan

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23
Q

acetabulum will be seen…

A

laterally

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24
Q

The acetabulum connect what bones

A

ilium, ischium, and pubis

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25
The triadilate cartilage is located where?
in the acetabulum. In infants and children, it is united by triadate cartilage at the acetabulum and after puberty it ossifies and the bones fuse to form the hip bone
26
ischium forms the ____ of your hip bone
back part
27
ischial tuberosity is what?
the bony part of your butt that you sit on
28
Greater sciatic notch, ischial spine, and lesser sciatic notch are located where on ilium?
posterior
29
body of ischium helps form the....
acetabulum
30
ramus of ischium help form parts of the...
obturator foramen
31
what is the obturator foramen?
large hole in pelvis made by pubic rami
32
what covers the obturator foramen?
obturator membrane
33
at the inferior part of the sacrum, you have what?
coccyx
34
pelvis is thick and heavy
male
35
pelvis is thin and light
female
36
greater pelvis is deep
male
37
greater pelvis is shallow
female
38
lesser pelvis is narrow and deep
male
39
lesser pelvis is wide and shallow
female
40
pelvic inlet is heart shaped and narrow
male
41
pelvic inlet is oval and rounded
female
42
pelvic outlet is small
male
43
pelvic outlet is large
female
44
pubic arch/angle is narrow and acute angle
male
45
pubic arch/angle is wide and obtuse
female
46
acetabulum is large
male
47
acetabulum is small
female
48
greater sciatic notch is narrow
male
49
greater sciatic notch is almost 90 degrees
female
50
taller iliac crest
male
51
iliac crest are what in females?
lower
52
the pelvic cavity is more ___ in females than in males because of child birth
wide
53
lumbosacral joint has an articulation between ___ and ___ and it connects the lumbar spine to the sacrum
L5; S1
54
The sacro-iliac joint aka SI joint is a strong weight bearing joint that connects what to what?
sacrum to the ilium
55
sacro-coccygeal joint is secondary cartilogineous joint that allows limited movement but provides stability. It is a attachment point for what?
pelvic floor muscles and ligaments
56
Pubic symphysis consists of fibrocartilagenous interpubic disc and surrounding ligaments. Formed by what?
the two pubic bones that meet at the midline - limited movement -widens at childbirth
57
obturator canal is located where
in the obturator foramen and its the only space that allows things to pass through
58
Iliolumbar ligament connects what
connects ilium to lumbar spine
59
sacrotuberous ligament connects what
connects sacrum to ischial tuberosity
60
sacrospinous ligament connects what
connects sacrum to ischial spine
61
the sacrospinous ligament is ___ to the sacrotuberous ligament
superior
62
The posterior SI ligament is more ___ and ____ than the anterior
thick and strong
63
straddle injury is fracture of all 4 what?
pubic rami
64
fracture of acetabulum is what?
dislocation of femoral head through the acetabulum
65
what is the lateral wall of the pelvis (muscle) ?
obturator internis
66
what is the posterior-superior wall of the pelvis (muscle)
piriformis
67
what is the floor of the pelvic?
pelvic floor
68
The pelvic floor muscles are made up of what
cocygeus and levator ani
69
The levator ani is one of the pelvic floor muscles are there are differences between...
male and females
70
Levator ani has
puborectalis -pubococcygeus -iliococcygeus (females) pubovaginalis (male) puboprostaticus
71
pubovaginalis is apart of what
levator ani and in females
72
puboprostaticus is apart of what
levator ani and in males
73
puborectalis, pubococcygeus, iliococcygeus - locations?
medial to lateral
74
puborectalis is ___ to the external anal sphincter
deep
75
urogenital hiatus in males vs females
m: only transmits urethra F: passage of urethra and vagina
76
female vs male deep dorsal vein
m: deep dorsal vein of the penis f: deep dorsal vein of the clitoris
77
Levator ani is a critical muscle group that forms a ___ shaped pelvic diaphragm supporting the pelvic viscera
cone
78
Levator ani plays a role in continence and stability of the pelvic region. What happens when it squeezes and relaxes?
squeezes(contracts): aids in continence. lifts and supports pelvic organs relaxes: allows for urination and defecation also facilitates childbirth
79
obturator internis fascia covers what
obturator internis
80
notice gap between obturator internus
allows for arteries, nerves, veins
81
rectum is ___ to urogenital hiatus
posterior
82
Puborectalis helps keep the anal canal ....
at an angle keeps the anorectal angle kinked when you are sitting or standing. This prevents involuntary stool passage and ensures you are not soley relying on spinchters
83
Squatting position for puborectalis
relaxes more completely allowing the anorectal angle to straighten
84
lateral wall
obturator internus
85
posterior superior wall
piriformis
86
pelvic floor
levator ani (differences in male and female) and coccygeus
87
obturator internus innervation
nerve to obturator internus
88
piriformis innervation
anterior rami of S1 and S2
89
coccygeus innervation
branches of S4 and S5 spinal nerves
90
levator ani innervation
nerve to levator ani, inferior anal nerve, and coccygeal plexus
91
rotates thigh laterally, assists in holding the head of the femur in acetabulum
obturator internus
92
rotates thigh laterally; abducts thigh; assists in holding head of femur in acetabulum
piriformis
93
forms small part of pelvic diaphragm; flexes coccyx
coccygeus
94
forms most part of pelvic diaphragm
levtor ani
95
what are the lateral hip rotators
obturator internus and piriformis
96
Retrouternine pouch is located where (females)
between uterus and rectum - deepest point in female peritoneal cacity - fluid collects here in ectopic pregnancy
97
retrovesicular pouch (in males) is located where
between rectum and bladder - space is formed between seminal vesicles and prostate gland