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Gross Anatomy 2 > Urogenital Triangle > Flashcards

Urogenital Triangle Flashcards

1
Q

What are the boundaries of the urogenital triangle?

A

The base is formed by the imaginary line between the ischial tuberosities and the apex is formed by the pubic synthesis

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2
Q

What structure is found in the urogenital triangle that allows the passage of the urethra?

A

Urogenital diaphragm

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3
Q

What fascia attaches to the posterior border of the urogenital diaphragm?

A

Scarpa’s

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4
Q

List some functions of the the urogenital diaphragm

A
  • Closes off the space between the pubic bones
  • Prevents prolapse
  • Provides attachment for structures of the superficial perineal pouch
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5
Q

Which layer of fascia of the urogenital diaphragm blends with the perineal body and membrane?

A

Superior

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6
Q

Which layer of fascia of the urogenital diaphragm contains the sphincter urethrae that controls urinations and the deep transverse perineal muscles?

A

Middle

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7
Q

What is the name of the layer of fascia between the perineal membrane and the skin

A

Superficial perineal patch

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8
Q

Which layer of the urogenital diaphragm is the deep perineal pouch?

A

The middle layer

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9
Q

In what layer of the urogenital diaphragm is the vagina?

A

The deep perineal pouch

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10
Q

In what layer of the urogenital diaphragm is the small glands associated with the vagina found?

A

Superficial perineal pouch

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11
Q

What structures are found in the deep perineal pouch?

A
  • Urethra
  • Sphincter urethrae
  • Deep transverse perineal muscles
  • Internal pudendal vessels and branches
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12
Q

What nerve innervates the deep perineal pouch?

A

Pudendal nerve

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13
Q

What structures are found only in the female deep perineal pouch?

A
  • Vagina

- Dorsal nerves of clitoris

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14
Q

What structures are found only in the male deep perineal pouch?

A
  • Membranous urethra
  • Dorsal nerves of the penis
  • Bulbourethral glands
  • Penile arteries
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15
Q

Which pouch of the urogenital diaphragm lies between the perineal membrane and the skin?

A

Superficial perineal pouch

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16
Q

What pouch of the urogenital diaphragm contains both the male and female reproductive organs?

A

Superifical peroneal pouch

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17
Q

What muscles are found in the superficial perineal pouch?

A
  • Ischiocavernosus
  • Bulbospongiosum
  • Superficial transverse perineal
18
Q

What are the muscles of the superficial pouch supplied by?

A

Perineal branches of the pudendal nerve

19
Q

What is the man function of the muscles of the superficial perineal pouch?

A

To overlie the erectile tissue of both sexes and maintain erection of the tissues by contracting to imped venous return, keeping the blood in the erectile tissue

20
Q

What is the main function of the ischiocavernosus muscle?

A

To help maintain erection of the penis and clitoris during stimulation

21
Q

What nerve and artery supply the ischiocavernosus muscle?

A

Perineal artery ad nerve

22
Q

What is the main function of the bulbiospongiosum in males and females?

A
  • In males it facilitates urination, ejaculation and erection
  • In females it contributes to the erection of the clitoris and emptying the greater vestibular glands
23
Q

What nerve and artery supply the bulbiospongiosum muscle?

A

Perineal nerve and artery

24
Q

What is the function of the superficial transverse perineal muscles?

A

To support the edge of the urogenital diaphragm

25
Q

What part of the urogenital diaphragm provides attachment for the small muscles of the superficial perineal pouch?

A

The perineal body

26
Q

What structure is the site of attachment for the anal sphincter

A

The perineal body

27
Q

What structure is the attachment site for bulbospongiosus and the superficial transverse perineal muscles?

A

The perineal body

28
Q

What is the crura?

A
  • In males it is a structure that continues into the penis as the corpora cavernosa
  • In females it forms the body of the clitoris
29
Q

What does the bulb of the penis continues as?

A

Corpus spongiosum which forms the glands penis

30
Q

What is the name of the structure in females that surround the opening of the vagina and forms the glands of the clitoris?

A

Bulb of vestibule

31
Q

What are the blocks of erectile tissue in the penis?

A
  • Corpus spongiosum

- Corpus cevernosum

32
Q

What block of erectile tissue in the penis does the urethra lie within?

A

Corpus spongiosum

33
Q

What artery and nerve supply the penis?

A

Pudendal artery and nerve

34
Q

Where does innervation to the erectile tissue of the penis come from?

A

Autonomic nerves

35
Q

What are the 4 parts of the male urethra?

A
  • Pre-prostatic
  • Prostatic
  • Membranous
  • Penile
36
Q

Where is the pre-prostatic part of the male urethra found?

A

Between the trigone and the prostate gland

37
Q

Where is the membranous part of the male urethra found?

A

Passing between the urogenital diaphragm

38
Q

Where does the ejaculatory duct join the urethra?

A

At the prostatic part

39
Q

What nerve provides sensory innervation innervation to the penis and scrotum?

A

Pudendal nerve

40
Q

How does the pudendal nerve reach the structures of the anal and urogenital structures?

A

Passes through the greater sciatic notch , around the ischial spine and then through the lesser sciatic notch to descend branches

41
Q

The clitoris is composed of erectile tissue derived from what structures?

A

The crura and bulb of vestibule

42
Q

What artery and nerve supply the clitoris?

A

Pudendal artery and nerve

Gross Anatomy 2 (13 decks)

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