Walls and Floor of the Pelvis Flashcards

(28 cards)

1
Q

What is the origin of the pubococcygeus?

A

Internal aspect of pubic bone and first part of obturator internus

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1
Q

Does the peritoneum drape over the vagina?

A

Yes, on the posteriosuperior surface

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2
Q

How does the endopelvic fascia support the viscera of the pelvis?

A

It condenses into ligaments

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3
Q

What are the three components of the pubococcygeus?

A

Pubovaginalis/puboprostageus - slings around the vagina and prostate

Puborectalis - slings around the rectum

Most lateral aspect - inserts into the anococcygeal raphe

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4
Q

Where does pus in the peritoneal cavity collect in females?

A

The rectro-uterine pouch aka Pouch of Douglas

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6
Q

Where does the obturator internus lie in the pelvis and perineum?

A

Half in each

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7
Q

What is the name of the muscle that sits on the lateral wall of the pelvis?

A

Obturator internus

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7
Q

What is levator ani? What are the names of its component muscles?

A

The two pelvic wall muscles that lift upwards

Pubococcygeus, Iliococcygeus

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8
Q

Through which foramen does piriformis exit the pelvis?

A

Greater sciatic foramen

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8
Q

What is the difference in the placement of loose and dense fascia?

A

Loose covers structures that move

Dense covers structures that are fixed

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8
Q

How does the peritoneum relate to the pelvic viscera?

A

It drapes over the viscera

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9
Q

Which ligament does the ischiococcygeal muscle follow?

A

Sacrospinous

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11
Q

What is the name of the middle aspect of the pelvic floor?

A

Iliococcygeus

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11
Q

What does the sacral plexus lie in relation to the piriformis and the endopelvic fascia?

A

It lies in between

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13
Q

Where does iliococcygeus insert?

A

The anococcygeal raphe

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14
Q

What closes the obturator foramen?

A

The obturator membrane

15
Q

What can be done for veterans that are unable to void due to an obstructive prostate?

A

Insert a needle through the abdominal wall directly into the bladder with a catheter to drain the bladder

17
Q

Does the pubococcygeus underlap or overlap the iliococcygeus?

17
Q

What is the name of the lowest point in the peritoneal cavity in males? Where does it lie?

A

The retrovesical pouch

In between the bladder and rectum

18
Q

What are the clinical implications of the position of the Pouch of Douglas?

A

Fluid that collects within it can be palpated

A needle can be inserted into the vagina and fluid from the pouch can be aspirated

19
Q

Which way does the bladder expand as it fills with urine?

A

Upwards into the abdominal cavity

21
Q

What surrounds neurovascular structures in the pelvis?

A

Endopelvic fascia

22
Q

What is the origin of the ischiococcygeus muscle?

24
Q

What branch of the internal iliac artery supplies the pelvis viscera?

A

The anterior branch

25
What is the name of the major artery of the pelvis that lines in the lateral walls within fascia?
Internal iliac
26
On which aspect of the pelvis does the piriformis lie?
Posterior
27
What is the name of the fascia of the pelvis?
Endopelvic fascia
28
What creates the rectoanal junction?
The slinging of puborectalis around the rectum