Perineum Flashcards

1
Q

What is the perineum?

A

Shallow compartment bounded by pelvic outlet

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2
Q

Which bony landmarks make up the pelvic outlet?

A

Pubic symphysis
Ischiopubic rami
Ischial tuberosities
Distal sacrum/coccyx

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3
Q

What are the 2 triangles that make up the perineum?

A

Urogenital triangle

Anal triangle

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4
Q

What is the urogenital triangle bounded by?

A

Pubic symphysis
Ischiopubic rami
Ischial tuberosities

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5
Q

What is the anal triangle bounded by?

A

Ischial tuberosities
Coccyx
(Sacrotuberous ligament)

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6
Q

What do the perineal membrane and ischiopubic rami provide foundation for?

A

Erectile bodies of external genitalia (superficial features of UG triangle)

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7
Q

Where is the perineal body found?

A

Midway between the two ischial tuberosities

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8
Q

What is the perineal body a convergence of?

A

Bulbospongiosus
Superficial/deep transverse perineal muscles
External anal sphincter

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9
Q

What structures are found in the male superficial perineal pouch?

A
Root of penis (Bulb and Crura)
Ischiocavernosus
Bulbospongiosus
Superficial transverse perineal muscle
Spongy urethra
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10
Q

What is the root of the penis composed of?

A

Two crura and a bulb

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11
Q

What is the root of the penis?

A

Non-pendulous portion of erectile tissue covered with muscle

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12
Q

What is the body of the penis?

A

Pendulous portion suspended from pubic symphysis

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13
Q

What comprises the body of the penis?

A

Corpora Cavernosa
Corpus Spongiosum
Glans

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14
Q

What is the Glans of the penis?

A

Expanded distal end of corpus spongiosum where the spongy urethra opens externally

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15
Q

What are the corpora cavernosa?

A

Paired dorsal erectile tissue bodies

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16
Q

What is the corpus spongiosum?

A

Ventral erectile tissue containing the spongy urethra

17
Q

What is included in the male deep perineal pouch?

A

Deep transverse perineal muscle
Membranous urethra
External urethral sphincter
Bulbourethral gland

18
Q

What is the clitoris?

A

Erectile organ where labia minora meet anteriorly

19
Q

Which structures are included in the female superficial perineal pouch?

A
Ischiocavernosus
Bulbospongiosus
Superficial transverse perineal muscle
Clitoris
Bulb of the vestibule
Greater vestibular gland
20
Q

Which structures are included in the female deep perineal pouch?

A

Sphincter urethrae muscle
Deep transverse perineal muscle
Urethra

21
Q

In anatomical position, where is corpus cavernosum in relation to corpus spongiosum?

A

Posterior

22
Q

What does the ischiocavernosus muscle cover?

A

Crura of corpora cavernosa

23
Q

What does the bulbospongiosus muscle cover?

A

Bulb of penis