Quiz for pelvis and perineum

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Question 1
Multiple-choice

What are branches of the pudendal n.?

Select the best answer

A fat filled space on sides of anal canal that allows it to expand/contract when pewping

due to the number of factors that
make the superior rectal vein more
prone to varicosities, like its long column of blood

1) Inferior anal n.:given off shortly after passing through the greater sciatic foramen.

2) Dorsal n. of penis/clitoris: deeper terminal branch, traveling into the deep perineal pouch

3) Perineal n: more superficial terminal branch

Point of contact between ilium and pubis.

Question 2
Multiple-choice

What innervates the external anal sphincter?

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Inferior rectal nerves.

Their damage would result in incontinence.

;_;

Circular muscular coat of the wall of large intestine, doesn't really do that much

The change in shape the lower part of the large intestine undergoes when it becomes the rectum.

An imaginary line that passes thru ischial tuberosities

Question 3
Multiple-choice

Select the best answer

1: Sacrum
2: Ilium
3: Ischium
4: Pubis
5: Pubic symphysis
6: Acetabulum
7: obturator foramen

Red dotted line = iliopectineal line

Lateral boundary of ischiorectal fossa (in fascia or obturator internus)

Circular muscular coat of the wall of large intestine, doesn't really do that much

Inferior rectal v.

Inferior to pectinate line.

Less common than internal hemorrhoids.

Question 4
Multiple-choice

What are the supero-medial borders of ischiorectal fossa?

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Rectum, urinary bladder, internal genitalia

Anal canal and anus and ischirectal fossae

infra-anal fascia / inferior fascia of pelvic diaphragm

Sacrotuberous ligament and coccyx

Question 5
Multiple-choice

What does the superior rectal vein eventually become?

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Inferior mesenteric vein

Internal pudendal v.

subcutaneous, superficial, deep

Pubic arch and symphysis

Question 6
Multiple-choice

Where does the middle rectal a. come from?

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Internal iliac a.

Internal pudendal a.

Pubic arch and symphysis

Inferior mesenteric vein

Question 7
Multiple-choice

What does the subcutaneous part of the external anal sphincter do?

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External genitalia, anal canal, urethra

Anterior part of perineum; urethra and ext. genitalia

Sacrotuberous ligament and coccyx

really just gives the anus its wrinkles.

Question 8
Multiple-choice

What are the anterior borders of perineum?

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Inferior mesenteric vein

ischial tuberosities

Pubic arch and symphysis

Pelvic diaphragm

Question 9
Multiple-choice

What does the pelvic cavity contain?

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Anterior recess of ischiorectal fossa

obturator internus (actually its fascia)

Sacrotuberous ligament and coccyx

Rectum, urinary bladder, internal genitalia

Question 10
Multiple-choice

Why are Internal hemorrhoids more
common than external hemorrhoids?

Select the best answer

Circular muscular coat of the wall of large intestine, doesn't really do that much

Point of contact between ilium and pubis.

due to the number of factors that
make the superior rectal vein more
prone to varicosities, like its long column of blood

A specialization of the obturator internus fascia. A strong band that stretches between the spine of the ischium and the superior pubic ramus.

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