Anatomy Lecture 1 Pelvis

Question 1

Which bones form the bony pelvis?

Answer 1

innominate bone
sacrum
coccyx

Question 2

What is the innominate bone? How many do we have?

Answer 2

2

ilium, ischium, pubis

Question 3

What are the beginning and end points of the iliac crest?

Answer 3

ASIS to PSIS

Question 4

The ischium and pubis together form what bony feature of the pelvis?

Answer 4

Ishiopubic ramus

Question 5

Can you palpate the ischial tuberosities?

Answer 5

yes

Question 6

From a seated position, what part of the bony pelvis are you sitting on?

Answer 6

Ischial tuberosities

Question 7

What bony feature of the pelvis is directly lateral to the pubic symphesis?

Answer 7

Pubic tubercles

Question 8

Which sex is the pubic arch thicker in?

Answer 8

Males

Question 9

What foramen lies between the ischiopubic ramus and the superior pubic ramus?

Answer 9

Obturator foramen

Question 10

Name the 3 joints of the pelvis

Answer 10

sacroiliac joints
hip joint
pubic sympthesis

Question 11

What type of joint is the hip joint?

Answer 11

synovial

Question 12

What type of joint is the pubic symphysis?

Answer 12

secondary cartilaginous

Question 13

What are the attachments of the inguinal ligaments?

Answer 13

ASIS to pubic tubercle

Question 14

What bony features of the ilium are palpatable?

Answer 14

ASIS, iliac crest, PSIS

Question 15

Can you palpate the ischial spines?

Answer 15

Only on vaginal examination (a finger breadth into the vagina at the 4 and 8 o’clock positions)

Question 16

What is the clinical relevance of palpating the ischial spines?

Answer 16

Locating approximate position of femoral nerve for femoral nerve block during labour

Question 17

What are the most important ligaments of the pelvis and what are their attachments?

Answer 17

sacrospinous: sacrum to iliac spine
sacrotuberous: sacrum to ischial tuberosity

Question 18

Describe the course of the pudendal nerve through the pelvis

Answer 18

Across iliac fossa
Out greater sciatic foramen
Directly back in lesser sciatic foramen
THIS IS NOT COMPLETE - FINISH
PUDENDAL CANAL

Question 19

When do the sacrotuberous and sacrospinous ligaments relax?

Answer 19

During late pregnancy

Question 20

What structures contribute to the pelvic inlet?

Answer 20

Sacral promontory
Ilium
Superior pubic ramus
Pubic symphysis

Question 21

What structures contribute to the pelvic outlet?

Answer 21

Pubic symphysis
Ischiopubic ramus
Ischial tuberosities
Sacrotuberous ligaments 
Coccyx

Question 22

The pelvic cavity is continuous with the _____

Answer 22

abdominal cavity

Question 23

The pelvic cavity lies between the ____ and ____

Answer 23

pelvic inlet and plelvic floor

Question 24

What structure forms the pelvic floor?

Answer 24

Levator ani muscle?

Question 25

What nerve supplies the levator ani and what SC roots is it formed from?

Answer 25

Pudendal nerve (double check) S2, 3, 4 keep your guts off the floor

Question 26

What feature of the pubis is wider in a female compared to a male

Answer 26

Subpubic angle and pubic arch

Question 27

Is the pelvic cavity shallower in the female or male?

Answer 27

Female

Question 28

Are the AP and transverse diameters of the pelvic inlet wider in a male or female?

Answer 28

Female

Question 29

Are the AP and transverse diameters of the pelvic outlet wider in a male or female?

Answer 29

Female

Question 30

What suture of the foetal skull is between the parietal and occipital bones?

Answer 30

Lambdoid suture

Question 31

What suture of the foetal skull is between the parietal bones?

Answer 31

Sagittal suture

Question 32

What suture of the foetal skull is between the parietal and frontal bones?

Answer 32

Coronal suture

Question 33

Name the fontanelles of the foetal skull

Answer 33

Anterior and posterior fontanelle

Question 34

What is moulding?

Answer 34

Movement of one bone over another to allow the foetal head to pass through the pelvis during labour

Question 35

What is the name to the area of the foetal skull outlined by the anterior and posterior fontanelles and the parietal eminences

Answer 35

Vertex

Question 36

Name the 2 diameters of the foetal skull, which is wider?

Answer 36

Occipitofrontal wider than biparietal diameter

Question 37

At the pelvic inlet is the transverse or AP diameter wider?

Answer 37

AP

Question 38

What is the station?

Answer 38

Distance of the foetal head from the ischial spines

Question 39

What does a negative station mean?

Answer 39

Head is superior to the ischial spines

Question 40

At the pelvic outlet is the transverse or AP diameter wider?

Answer 40

AP

Question 41

What position should the foetal head be at the pelvic inlet?

Answer 41

Transverse

Question 42

What position should the foetal head be as it descends through the pelvic cavity?

Answer 42

Rotated and flexed (chin on chest)

Question 43

What position should the foetal head by at the pelvic outlet?

Answer 43

Occipitoanterior position with extended neck