Anatomy 1: Bony Pelvis Anatomy Flashcards Preview

3rd Year Summary > Anatomy 1: Bony Pelvis Anatomy > Flashcards

Flashcards in Anatomy 1: Bony Pelvis Anatomy Deck (15):
1

What does the bony pelvis consist of?

2 hip bones
Sacrum
Coccyx

2

Each hip bone is a fusion between?

Ilium
Ischium
Pubis

3

What are the ligaments of the pelvis?

Sacrospinous ligament (smaller)
Sacrotuberous ligament (larger)

4

Where does the sacrospinous ligament attach?

To the sacrum and ischial spine

5

Where does the sacrotuberous ligament attach?

Between the ischial spine and a broad attachment on the sacrum

6

What is the function of the sacrotuberous and sacrospinous ligaments?

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

7

What happens to the ligaments of the pelvis during pregnancy?

They relax

8

What is the course of the pudendal nerve?

Leaves through the greater sciatic foramen and returns through the lesser sciatic foramen

9

What makes up the pelvic inlet?

Sacral promontory
Ilium
Superior Pubic Ramus
Pubic Symphysis

10

What makes up the pelvic outlet?

Pubic Symphysis
Ischiopubic ramus
Ischial tuberosities
Sacrotuberous ligaments
Coccyx

11

What are the features of the male pelvis?

-Thick, robust bone
-Narrow, deep pelvis
-Heart shaped, narrow pelvis inlet, small pelvic outlet
-Narrow subpubic angle
-Round obturator foramen
-Narrow greater sciatic notch

12

What are the features of the female pelvis?

-Thin, light bone
-Wide, shallow pelvis
-Rounded, wide pelvic inlet, large pelvic outlet
-Wide subpubic angle
-Oval obturator foramen
-90degree greater sciatic notch

13

What is the vertex?

An area of the baby's skull outlined by the anterior and posterior fontanelles and the parietal eminences

14

At the pelvic inlet, the transverse diameter of the pelvis is wider then the AP diameter T/F?

True

15

Explain the 3 steps of passage through the birth canal during labour

1) At the pelvic inlet, the baby's head should be transverse

2)As it descends through the pelvic cavity, the head should rotate and it should be flexed

3)At the pelvic outlet, the baby's head should ideally lie occipitoanterior and extension of the head on the neck should occur