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MLA Revision > Anatomy of the Pelvis > Flashcards

Anatomy of the Pelvis Flashcards

1
Q

Which are the bones of the pelvic girdle?

A

R & L Innominate
Sacrum
(Coccyx is not included)

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2
Q

What does the pelvic girdle do?

A

Weight bearing

Muscle attachment (lower limb, perineum, pelvis diaphragm, erectile tissue)

Protection of pelvic viscera

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3
Q
A
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4
Q
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5
Q
A
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6
Q

What is the name for the area of the pelvis where the hip bone sits?

A

Acetabulum

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7
Q

What type of cartilage is found in the acetabulum?

A

Triradiate cartilage

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8
Q

When do the innominate bones fuse?

A

Puberty

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9
Q

Which bones make up the innominate bone?

A

Ischium
Ilium
Pubis

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10
Q
A
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11
Q
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12
Q
A
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13
Q

What runs between the ASIS and PSIS?

A

Iliac crest

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14
Q

What are the tuberosity and spine of the ischium important for?

A

Muscle attachment

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15
Q
A
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16
Q

How can you tell the difference between a M and F pelvis from the pubis bone?

A

By the pubic arch - the degree of the angle - M usually <70, F usually >80 degrees

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17
Q

What is another name for the pecten pubis?

A

Pectineal line

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18
Q

How many vertebrae make up the sacrum?

A

5 (fused)

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19
Q

How many vertebrae make up the coccyx

A

3 (fused)

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20
Q

How can the sacrum differ in M and F?

A

The promontory protrudes less in F to allow the passage of a baby through the birth canal

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21
Q
A
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22
Q

How many joints are in the pelvis?

A

5

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23
Q

Name the joints of the pelvis.

A

Lumbrosacral
Zygapophysial
Sacrococcygeal symphysis
Sacroiliac (SIJ)
Pubic symphysis

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24
Q

What type of joint is the lumbrosacral joint?

A

Secondary cartilaginous

25
Q

What type of joint is the zygapophysial?

26
Q

What type of joint is the sacrococcygeal symphysis?

A

Secondary cartilaginous

27
Q

What type of joint is the sacroiliac?

A

Synovial (free movement) and fibrous syndesmosis (linked by strong ligaments)

28
Q

What are the three ligaments which support the sacroiliac joint?

A

Anterior sacro-iliac ligament
Posterior sacroiliac ligament
Interosseus sacro-iliac ligament

30
Q

What type of joint is the pubic symphysis?

A

Secondary cartilaginous

31
Q

Which two ligaments support the pubic symphysis?

A

Superior pubic ligament
Inferior pubic ligament

33
Q

What do the ligaments of the pelvis do?

A

Reinforce the joints and make it stable to prevent excess movement

34
Q

What is an articular surface?

A

A smooth surface lined with cartilage

35
Q

Where does the illiacus muscle sit?

A

In the Iliac fossa

36
Q

What are the three foramina of the pelvis?

A

Obturator foramen
Greater sciatic foramen
Lesser sciatic foramen

37
Q

Which two ligaments stabilise the sacroiliac joint (SIJ) to form foramina?

A

Sacrotuberous ligament
Sacrospinous ligament

39
Q

What are the boundaries of the obturator foramen?

A

Obturator membrane
Ischiopubic ramus
Superior pubic ramus

40
Q

What are the boundaries of the greater sciatic foramen?

A

Greater sciatic notch
Ischial spine
Sacrospinous ligament
Sacrotuberous ligament

41
Q

What are the boundaries of the lesser sciatic foramen?

A

Lesser sciatic notch
Ischial tuberosity
Ischial spine
Sacrospinous ligament
Sacrotuberous ligament

43
Q

How can you differentiate between M & F pelvises?

A

(1). Pubic angle - wider in F

(2) Pubic inlet - wider and circular in F, heart shaped in M

(3) Sacral promontory - sticks out more in M

(4) Ischeal spines - stick out further into the pelvis spines in M

(5). M - pelvis thicker and heavier, with deeper greater and lesser pelvis spaces.

(6) Pelvic outlet - bigger and wider in F

(7) Obturator foramen - round in M, oval in F

44
Q

What is the superior opening of the pelvis?

A

Pelvic inlet

45
Q

What is the inferior opening of the pelvis?

A

Pelvic outlet

47
Q

What is another name for the pelvic inlet?

A

Pelvic brim
Superior pelvic aperture

48
Q

What are the boundaries of the pelvic inlet?

A

Sacral promontory
Sacral alae
Arcuate line
Pecten pubis
Pubic crest
Pubic symphysis

49
Q

What is the linea terminalis composed of?

A

Arcuate line
Pecten pubis
Pubic crest

50
Q

What is another name for the pelvic outlet?

A

Inferior pubic aperture

51
Q

What are the boundaries of the pelvic outlet?

A

Pubic symphysis
Pubic arch
Ischial tuberosities
Sacrotuberous ligament
Coccyx

53
Q

Where is the greater (false) pelvis found?

A

Superior to the pelvic inlet

54
Q

What does the greater (false) pelvis contain?

A

Peritoneal organs

55
Q

Where is the lesser (true) pelvis found?

A

Inferior to the pelvic inlet and superior to the pelvic outlet

56
Q

What does the lesser (true) pelvis contain?

A

Reproductive organs
Urinary organs (bladder)
GI organs (rectum)
Neurovasculature

MLA Revision (9 decks)

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