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Reproduction Anatomy > Bony Pelvis > Flashcards

Bony Pelvis Flashcards

1
Q

What bones comprise the bony pelvis?

A

2 innominate bones
Sacrum
Coccyx

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2
Q

Each innominate bone is a fusion between which bones?

A

Ilium
Ischium
Pubis

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3
Q

The iliac crest is located between which bony landmarks?

A

ASIS and PSIS

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4
Q

What are the main joints of the pelvis?

A

Sacroiliac
Hip
Pubic symphysis

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5
Q

What type of joint is the hip joint?

A

Synovial

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6
Q

What type of joint is the pubic symphysis?

A

Secondary cartilaginous

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7
Q

Which ligament attaches between the ASIS and pubic tubercle?

A

Inguinal ligament

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8
Q

What are the two main ligaments of the pelvis?

A

Sacrotuberous

Sacrospinous

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9
Q

What is the function of the sacrotuberous/sacrospinous ligaments?

A

Ensure the inferior part of the sacrum is not pushed superiorly when weight is transferred through vertebral column

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10
Q

What forms the border of the pelvic inlet?

A

Sacral promontory
Ilium
Superior pubic ramus
Pubic symphysis

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11
Q

What forms the border of the pelvic outlet?

A 
Pubic symphysis
Ischiopubic ramus
Ischial tuberosities
Sacrotuberous ligaments
Coccyx
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12
Q

Trauma to the bony pelvis can cause haemorrhage from which vessels?

A

Common iliac artery

Common iliac vein

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13
Q

Which pelvic organs may be damaged by trauma to the bony pelvis?

A

Uterus
Bladder
Rectum

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14
Q

Give some differences between the male and female bony pelvis

A

Transverse diameter of female pelvis is larger
Suprapubic angle is larger in female
Pelvic cavity is shallower in female

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15
Q

During labour, what allows one bone of the foetal head to pass over another?

A

Sutures and fontanelles

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16
Q

In the foetus, the biparietal diameter is longer than the occipitofrontal diameter. True/false?

A

False - occipitofrontal diameter is longer than biparietal

17
Q

Why should the foetus enter the pelvic cavity in the transverse direction?

A

As while the transverse diameter of the pelvis is longer than the AP diameter the opposite is true in the foetus

18
Q

How should the foetal head be when descending through the pelvic cavity?

A

Rotated and flexed

19
Q

What position should the baby ideally leave the pelvic cavity?

A

Occipitoanterior

20
Q

Outline the positions of the foetal head during labour

A

Pelvic inlet - transverse
Pelvic cavity - rotated and flexed
Pelvic outlet - occipitoanterior and extended

Reproduction Anatomy (8 decks)

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