Bony Pelvis (1)

Question 1

Which bones does the pelvic girdle consist of? (3)

Answer 1

• Sacrum
• 2 x os coxae

Question 2

Each os coxae consist of
3 bones:

Answer 2

• Ilium
• Ischium
• Pubis

Question 3

What does the sacrum consist of?

Answer 3

Sacrum
* 5 fused sacral vertebrae

Question 4

Sacrum

What are the parts of the upside down triangle? (5)

Answer 4

• Base
• Apex
• Ventral surface (pelvic)
• Dorsal surface
• 2 lateral margins

Question 6

What is the function of the base of the sacrum?

Answer 6

• Supports weight of
  vertebral column

Question 7

Sacrum – Base

• Superior surface:

Answer 7

S1

Articular process - L5

Question 8

Sacrum – Base

• Anterior margin
  prominent:

Answer 8

– sacral promontory

Question 9

• Wide wing-like ____ form

Answer 9

Ala

Question 10

Sacrum – Base

What is the pelvic brim called?

Answer 10

• Linea terminalis – pelvic
  brim

Question 11

Sacrum

• Apex : (2)

Answer 11

• Projects downwards
• Joined to coccyx

Question 12

• Pelvic Surface
• Concave –
• Transverse ridges -

Answer 12

• Concave – smooth
• Transverse ridges - fusion

Question 13

• Pelvic Surface
• 4 anterior sacral _______

Answer 13

foramina

Question 14

What are the features the dorsal surface?

Answer 14

• Convex and roughened

Question 15

What are the crests associated with the sacrum? (3)

Answer 15

• Median sacral crest
• Medial sacral crest
• Lateral sacral crest

Question 16

Sacrum

• Median sacral crest:

Answer 16

• Fused spinous processes

Question 17

Sacrum

• Medial sacral crest:

Answer 17

• Fused articular processes – Indistinct ridge

Question 18

Sacrum

• Lateral sacral crest:

Answer 18

• Fused transverse processes

Question 19

• Sacral hiatus – projection =

Answer 19

= sacral horns

Question 20

• Posterior sacral _______

Answer 20

foramina

Question 21

What is the shape of the lateral surface of the sacrum?

Answer 21

• Ear-shaped structure
• Auricular facets/ surface

Question 22

Sacrum:

What joints are at the sacrum? (2)

Answer 22

• Sacro-iliac joints
• Behind facet – sacral
  tuberosity

Question 23

What is the coccyx?

Answer 23

3-5 rudimentary segments
Remanent of embryonic tail

Question 24

What is the Os Coxa? (2)

Answer 24

• Large, irregular bone
• Cup-shaped hollow

Question 25

* Acetabulum articulates with =

Answer 25

head of femur

Question 26

The Os Coxa forms the ____ and _____ walls of the pelvis.

Answer 26

anterior lateral

Question 27

Os Coxa * Joined anteriorly – * Joined posteriorly –

Answer 27

pubic symphysis sacro-iliac joint

Question 28

* Consists of 3 parts:

Answer 28

* Ilium – 2/5 * Ischium – 2/5 * Pubis – 1/5

Question 29

Where is the Os Coxa joined?

Answer 29

Joined at acetabulum

Question 30

When does the Os Coxa ossify?

Answer 30

* Ossifies at the age of 16

Question 31

Ilium: * Superior margin:

Answer 31

* Upper arched margin known as iliac crest

Question 32

Ilium: * S-shaped (above): (2)

Answer 32

* Anterior two-thirds * Posterior third

Question 33

What are the anterior two-thirds of the margin of the ilium? (2)

Answer 33

* Anterior superior iliac spine (ASIS) * Anterior inferior iliac spine (AIIS)

Question 34

ASIS: inguinal ligament & _______

Answer 34

sartorius

Question 35

Ilium: * Posterior third of the margin:(2)

Answer 35

* Posterior superior iliac spine (PSIS) * Posterior inferior iliac spine (PIIS)

Question 36

Ilium Just inferior to posterior inferior iliac spine - _____ ______ ______

Answer 36

greater sciatic notch

Question 37

What is shared with the greater sciatic notch?

Answer 37

shared by ilium + ischium

Question 38

Ilium: * Gluteal surface –

Answer 38

lateral surface

Question 39

How is the ilium divided?

Answer 39

* Divided into 4 areas by 3 gluteal lines

Question 40

Ilium: * Lines distinct or vague: (3)

Answer 40

* Posterior gluteal line * Anterior gluteal line * Inferior gluteal line

Question 41

* Posterior gluteal line - Small posterior area gives origin to....

Answer 41

the gluteus maximus

Question 42

* Anterior gluteal line - Large anterior area gives origin to...

Answer 42

the gluteus minimus

Question 43

* Anterior gluteal line - Between two gluteal lines -

Answer 43

gives origin to gluteus medius

Question 44

* Inferior gluteal line - Attachment of:

Answer 44

* Attachment of capsule of hip joint

Question 45

Ilium Pelvic surface - _____ surface

Answer 45

medial

Question 46

* Pelvic surface – medial surface * 3 areas:

Answer 46

* Iliac fossa * Arcuate line * Posterior sacropelvic surface

Question 47

Ilium: * Iliac fossa – faces the....

Answer 47

greater pelvis (wing/ala)

Question 48

Iliac fossa: Muscle -

Answer 48

* Iliacus m.

Question 49

* Arcuate line What does it separate?

Answer 49

* Separates iliac fossa from the lesser pelvis

Question 50

* Posterior sacropelvic surface * Smooth anterior surface =

Answer 50

auricular surface

Question 51

What does the Posterior sacropelvic surface join?

Answer 51

* Joins to sacrum (sacroiliac joint)

Question 52

* Posterior sacropelvic surface * Rough posterior area =

Answer 52

iliac tuberosity

Question 53

What shape is the Ischium?

Answer 53

* U-shaped

Question 54

What are the features of the body of the Ischium? (3)

Answer 54

* Contributes 2/5 of the acetabulum anteriorly * Ischial spine * Lesser sciatic notch posteriorly

Question 55

Ischium * Ramus - Contributes to:

Answer 55

* Contributes to formation of obturator foramen

Question 56

Ischium * Ramus - Joins to

Answer 56

* Joins to inferior pubic ramus and forms one pillar of the pubic arch

Question 57

Ischium * Ramus - Ischial tuberosity: (2)

Answer 57

* Where the body and ramus join * Rough surface for muscles