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Flashcards in Anatomy Deck (166)
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1

What does the bony pelvis consist of?

2 hip bones
Sacrum
Coccyx

2

What is each hip bone a fusion of?

Ilium
Ischium
Pubis

3

What is the ischiopubic ramus made up of?

Both ischium and pubis

4

What ligament attaches to the pubic tubercle?

Inguinal ligament

5

Where does the inguinal ligament attach between?

The ASIS and pubic tubercle

6

Where are the ischial spines palpable?

On vaginal examination, at about a finger breadth into the vagina (approx. 4 and 8oclock positions)-also pudendal nerve

7

Where are the attachments of the sacrospinous ligament?

Sacrum and ischial spine

8

Where are the attachments of the sacrotuberous ligament?

Sacrum and ischial tuberosity

9

What is the function of the sacrotuberous and sacrospinous ligaments?

Ensure inferior sacrum is not pushed superiorly when weight is suddenly transferred vertically through vertebral column (eg. jumping, later pregnancy)

10

What 2 foraminae do the sacrotuberous and sacrospinous ligaments form?

Greater and lesser sciatic foraminae

11

What forms the pelvic inlet?

Sacral promontory
Ilium
Superior pubic ramus
Pubic symphysis

12

What forms the pelvic outlet?

Pubic symphysis
Ischiopubic ramus
Ischial tuberosities
Sacrootuberous ligaments
Coccyx

13

What part of the pelvic cavity does levator ani form?

Pelvic floor- musculofascial inferior part

14

What are the functions of the pelvis?

Upper body support
Transference of weight from vertebral column to femurs
Attachment for muscles of location and abdo wall
Attachment for external genitalia
Protection of pelvic organs and associated structures
Passage for childbirth

15

What are the key differences between the female and male pelvis?

AP and transverse diameters are larger
Subpubic angle is wider
Pelvic cavity is shallower

16

What is moulding?

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

17

Moulding is allowed due to the presence of what?

Sutures and fontanelles

18

What is the vertex?

An area of foetal skull- outlined by the anterior and posterior fontanelles and the parietal eminences

19

Which is longer-the occipofrontal diameter or the biparietal?

Occipitofrontal

20

At the pelvic inlet, is the transverse of AP diameter wider?

Transverse

21

The foetus should enter the pelvic cavity facing what direction?

Either right or left (transverse)

22

What is the station?

The distance of the foetal head from the ischial spines
-ve means head is superior, +ve means head is inferior

23

What should the foetal head do whilst descending through the pelvic cavity?

Rotate
Be in a flexed position e.g. chin on chest

24

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

AP

25

In what position should the baby ideally leave the pelvic cavity?

Occipitoanterior position

26

During delivery should the foetal head be in flexion or extension?

Extension

27

What happens once baby's head is delivered?

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

28

What parts of the female reproductive system are within the pelvic cavity?

Ovaries
Uterine tubes
Uterus
Superior part of vagina

29

What parts of the female reproductive system are within the perineum?

Inferior part of vagina
Perineal muscles
Bartholin's glands
Clitoris
Labia

30

Fluid collection in the pouch of Douglas can be drained via a needle passed through what in females?

Posterior fornix of the vagina