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Anatomy Finals > Pelvis > Flashcards

Pelvis Flashcards

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1
Q

region of the trunk below the abdomen

A

Pelvis

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2
Q

Functions of the pelvis

A

a. transmit the weightt of the body from the vertebral column to the femurs
b. supports and protects the pelvic viscera
c. provides attachment for trunk and lower limb muscles

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3
Q

Two parts of the pelvis

A

false and true pelvis

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4
Q

Posterior border of the false pelvis

A

Lumbar vertebrae

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5
Q

Lateral border of the false pelvis

A

Ilias fossae and illiacus muscle

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6
Q

Anterior border of the false pelvis

A

Lower part of the anterior abdominal wall

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7
Q

Bowl-shaped structure that contains and protects the lower parts of the pelvic viscera

A

True pelvis

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8
Q

The three parts of the true pelvis

A

Inlet, outlet and cavity

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9
Q

Bounded posteriorly by the sacral promontory, laterally by the iliopectineal lines and anteriorly by the symphysis pubis

A

Pelvic inlet

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10
Q

Bounded posteriorly by coccyx, laterally by ischial tuberosities and anteriorly by the pubic arch

A

pelvic outlet

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11
Q

Between the inlet and outlet and is a short curved canal with a shallow anterior wall and much deeper posterior wall

A

Pelvic cavity

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12
Q

Circular opening between the abdominal cavity and the pelvic cavity

A

Pelvic inlet

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13
Q

The three parts of the linea terminalis

A

Arcuate lines, pectin pbis and pubic crest

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14
Q

Forms the brim of the true pelvis

A

Pelvic inlet

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15
Q

Another term for the pelvic inlet

A

superior strait

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16
Q

The three diameters found in the anteroposterior Pelvic

A

Diagonal conjugate, true conjugate and obstetric conjugate

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17
Q

Distance bettween the lower border of the symphysis pubis to the midpoint of sacral promontory

A

diagonal conjugate

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18
Q

Measurement of the diagonal conjugate

A

12 cm

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19
Q

This is the only conjugate that can be measured clinically

A

Diagonal conjugate

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20
Q

Distance between the upper margin of the symphysis pubis to the midpoint of the sacral promontory

A

True or anatomic conjugate

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21
Q

Measurement of the anatomic conjugate

A

11cm

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22
Q

How do you measure the true conjugate

A

By subtracting 1.2cm from diagonal conjugate

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23
Q

Distance between the midpoint of inner surface of symphysis pubis to midpoint of sacral promontory

A

Obstetric conjugate

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24
Q

Is the shortest distance between that sacral promontoryy and the symphysis pubis

A

Obstetric conjugate

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25
Measurement of the obstetric conjugate
10cm
26
How do you measure the obstetric conjugate
By subtracting 1.5-2cm from the diagonal conjugate
27
represents the greatest distance between the linea terminalis on either side
Transverse diameter
28
Measurement of the transverse diameter
13cm
29
Divides the inlet into anterior and posterior segments
Transverse diameter
30
Extend from the sacroiliac joints to the opposite iliopubic eminence
Oblique diameters
31
Measurement of the oblique diameter
less than 13 cm
32
Extends from the lower margin of the symphysis pubis, through the level of the ischial spines up to the tip of the sacrum
Midpelvis
33
Distance between the two ischial spines is how much
10.5 cm (INTERSPINOUS DIAMETER)
34
This is referred to as station 0 when the BPD of the fetal head passes 10.5cm
Interspinous diameter
35
Usually the smallest pelvic diameter
Interspinous diameter
36
Intertuberous diameter of the pelvic outlet measures what
11cm
37
How many bones make up the pelvis
Four
38
How many walls does the pelvis have
Four
39
What are the four bones that make up the pelvis
2 hip bones, saccrum and coccyx
40
What are the four walls of the pelvis
Anterior, Posterior, lateral and inferior or floor
41
Shallowest wall formed by pubic bones posteriorly
Anterior Pelvic wall
42
cartilaginous joint that sits between and joins the left and right superior rami of the pubic bones
Symphysis pubis
43
In males, what structure is attached to the pubic symphysis
Suspensory ligament of the penis
44
In the females, what structure is intimate with the symphysis pubis
Clitoris
45
What wall is formed by the sacrum, coccyx and piriformis muscles
Posterior pelvic wall
46
single, wedgge-shape bone formed by five rudimentary vertebrae
Sacrum
47
The upper border of the sacrum articulates with what
lumbar vertebrae
48
The lower border of the sacrum articulates with what
Coccyx
49
The 1st sacral vertebra is also referred to as the
sacral promontory
50
When the 4th and 5th vertebra fail to meet in the midline it is referred to as the
Sacral hiatus
51
This space is formed by the vertebral foramen
Sacral canal
52
A small triangular bone formed by 4 vertebrae
Coccyx
53
The coccyx is attached to the sacrum by what fibrocartilaginous joint
sacrococcygeal joint
54
Support and stabilize when in sitting position
coccyx
55
Four muscles of the anterior coccyx
Levator ani, coccygeus, iliococcygeus, pubococcygeus
56
Posterior muscle of the coccyx
Glutea maximus
57
Two ligaments found in the coccyx
Anterior and posterior sacro-coccygeal ligaments
58
Arises from the lateral mass of the sacrum and inserted to the greater trochanter of the femur
Piriformis muscle
59
Action of the piriformis muscle
Lateral rotator of the femur
60
Nerve supply of the piriformis muscle
Sacral plexus
61
Strong synovial joints between the sacrum and need for iliac bones
Sacroiliac joints
62
Strong ligament passing from the tip of the transverse process of the fiifth lumbar to upper magin of ileum
Iliolumbar ligament
63
The lateral pelvic wall or hipbone is composed of what three structures
ilium, ischium and pubis
64
flattened part of the hip bone
ilium
65
inferiorly and posteriorly part of hip bone
Ischium
66
Anterior part of the hipbone
Pubis
67
fbrous sheet covers the obturator foramen
Obturator membrane
68
Smalll opening for the passage of obturator nerve and vessels
Obturator canal
69
Prevent the lower end of the sacrum and coccyx from being rotated upward
Sacrotuberous and sacrospinous ligament
70
The action of this muscle is to laterally rotate the femur at the hip joint
Obturator internus
71
formed by the levator an muscles and the small coccygeus muscles
pelvic diaphragm
72
Allows passage for urethra and vagina
pelvic diaphragm
73
Wide thin sheet that originates from the back of the body of the pubis
Levator ani muscles
74
Nerve supply of the levator ani musclee
Perineal branch of the 4th sacra nerve and pudendal nerve
75
Forms a sling around the vagina and are inserted into a mass of fibrous tissue called perineal body in front of the anal canal
Anterior fibers
76
Forms a sling around the junction of the rectum and anal canal
Intermediate fibers
77
Iliococcygeus inserted into the anococcygeal body and coccyx
Posterior fibers
78
Arises from the ischial spine and is inserted to the lower end of the sacrum and upper part of coccyx
Coccygeus muscle
79
Nerve supply of the coccygeus muscle
4th and 5th sacral nerve
80
Two types of anterior fibers; one found in male while the other is found in females
Levator prostate and sphincter vaginae
81
Two types of intermediate fibers
Puborectalis and pubococcygeus
82
Two types of posterior fibers
Iliococcygeus inserted into the anococcygeal bodyy and the coccyx

Anatomy Finals (3 decks)

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