Bony Pelvis Anatomy

Question 1

What does the bony pelvis consist of?

Answer 1

2 hip bones

sacrum

coccyx

Question 2

Label this hip

Answer 2

Question 3

Label this Ilium.

Answer 3

Question 4

Label this Ischium.

Answer 4

Question 5

Label the Pubis

Answer 5

Question 6

What does the red line represent?

Answer 6

the pelvic inlet

Question 7

What does the green dotted line represent?

Answer 7

the pelvic outlet

Question 8

Where does the pelvic cavity lie?

Answer 8

within the bony pelvis

Question 9

Where does the inguinal ligament attach?

Answer 9

Between the ASIS and the pubic tubercle

Question 10

In what positions in vaginal examination can the ischial spines be felt?

Answer 10

4 and 8 oclock positions

Question 11

Label this xray of the bony pelvis.

Answer 11

Question 12

Label the joints of the pelvis.

Answer 12

Question 13

Label these ligaments.

Answer 13

Question 14

What do the sacrotuberous and sacrospinous ligaments ensure?

Answer 14

That the inferior part of the sacrum isnt pushed superiorly when weight is suddenly transferred vertically through the vertebral column e.g. jumping, late pregnancy

Question 15

What 2 foraminae are formed by the presence of the sacrotuberous and sacrospinous ligaments?

Answer 15

Greater and lesser sciatic foraminae

Question 16

Where do the obturator nerve and vessels pass through?

Answer 16

Through the obturator foramen via the obturator canal

Question 17

What structures can be damaged with trauma to the bony pelvis?

Answer 17

common iliac artery

common iliac vein

sacral nerves/plexus

Question 18

What is moulding?

Answer 18

The movement of one bone over another to allow the fetal head to pass through the pelvis during labour.

Sutures and fontanelles allow this to happen.

Question 19

What is the largest diameter in the fetal head?

Answer 19

The occipitofrontal diameter (fetal head is longer than it is wide)

Question 20

What is the vertex?

Answer 20

An area of the fetal skull - outlined by anerior and posterior fontanelles and parietal eminences

Question 21

How should a fetus ideally enter the pelvic cavity?

Answer 21

Transverse - facing to the right or left

Question 22

What is the distance of the fetal head from the ischial spines referred to as?

Answer 22

the station

A negative number means the head is superior to the spines (a positive number means inferior)

Question 23

How should the baby leave the pelvic cavity ideally?

Answer 23

In an occipitoanterior position

Question 24

How should the fetal head be during delivery?

Answer 24

In extension

Question 25

How should the fetal head be as it descends through the pevlic cavity?

Answer 25

It should rotate and be flexed

Question 26

What happens once the baby’s head is delivered?

Answer 26

There is further rotation so the shoulders and rest of the baby can then be delivered

Question 27

What does the inguinal ligament carry?

Answer 27

spermatic cord (M)

round ligament of uterus and ilioinguinal nerves

Question 28

What type of joint are the sacroiliac joints and what actions can they do?

Answer 28

synovial plane joints

sliding/gliding movements

Question 29

What kind of joint is the pubic symphisis? Describe its movement.

Answer 29

secondary cartilagenous

symphysis - less movement than a synvial joint, more than fibrous

Question 30

What kind of joint is the lumbosacral joint?

Answer 30

secondary cartilagenous

Question 31

What kind of joint is the hip joint? What movements can it do?

Answer 31

synovial ball and socket joint

flexion/extension, adduction/abduction, medial/lateral rotation

Question 32

WHat creates the obturator foramen?

Answer 32

ischuim and pubis bones

carries obturator nerve, vein and artery

Question 33

Where does the sacrotuberous ligament run from?

Answer 33

sacrum to ischial tuberosity

Question 34

Where does the sacrospinous ligament run from?

Answer 34

sacrum to ischial spine

Question 35

What muscle goes through the greater sciatic foramen?

Answer 35

piriformis

Question 37

Where do the femoral nerve and vessels travel through?

Answer 37

subinguinal space

Question 38

Which nerves and vessels travel through the greater sciatic foramen?

Answer 38

sciatic and gluteal

Question 39

Where does the iliacus muscle originate?

Answer 39

in the iliac fossa

Question 40

Where does the sartorius muscle originate?

Answer 40

ASIS