Urogenital Triangle Flashcards

1
Q

What are the 3 boundaries of the urogenital triangle

A

The two ischial tuberosities and the pubic symphysis

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2
Q

What are the fatty and membranous fascia layers called

A
Fatty = Camper's fascia
Membranous = Scarpa's fascia
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3
Q

What is the Camper’s fascia continuous with

A

Ischiorectal fossa and the thigh

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4
Q

In the scrotum, what is the Camper’s fascia replaced with

A

Dartos smooth muscle of the scrotum

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5
Q

What is the membranous fascia termed in the pelvic region

A

Colles’ membrane

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6
Q

What is the colles’ membrane attached to

A

Posterior border of the urogenital diaphragm, and into the labia/scrotum

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7
Q

How many layers is the urogenital diaphragm made up of

A

3

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8
Q

Describe the 3 different layers of the urogenital diaphragm

A
Superior = fascia (deep)
Middle = sphincter urethrae and deep transverse perineal muscles
Inferior = fascia (superficial; perineal membrane)
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9
Q

What is left after the layers of the urogenital diaphragm fuse together

A

A small space between the layers called the deep perineal pouch

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10
Q

What nerve innervates the urogenital diaphragm

A

The pudendal (perineal) nerve

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11
Q

In females, what passes through the deep perineal pouch

A
  1. Vagina

2. Dorsal nerves of the clitoris

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12
Q

In males, what passes through the deep perineal pouch

A
  1. Membranous urethra
  2. Dorsal nerves of the penis
  3. Bulbourethral glands
  4. Penile arteries
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13
Q

Where is the superficial perineal pouch located

A

Between the perineal membrane, in the superficial fascia, and the skin

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14
Q

What 3 muscles are located within the superficial perineal pouch

A
  1. Ischiocavernosus
  2. Bulbospongiosus
  3. Superficial transverse perineal
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15
Q

How many bulbospongiosus muscles are present in males and females, respectively

A
Males = 1 (can have a solid mass of tissue surrounding the urethra of the penis)
Females = 2 (need an opening for the vagina)
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16
Q

What different erectile tissue types are present in males and females

A
Males = Bulb of penis and the crura either side of the penis (corpuscavernosum)
Females = Bulb of vestibule (with a space in the middle) and the crura either side
17
Q

What do the crura contribute to in males and females, respectively

A
Males = the head of the penis
Females = the top part of the clitoris
18
Q

What is the perineal membrane

A

A small fibrous structure

19
Q

What 3 structures attach to the perineal membrane

A
  1. External anal sphincter
  2. Bulbospongiosus
  3. Superficial transverse perineal muscles
20
Q

Describe the different tissues of the penis, and what they are an extension of

A
  1. Corpus spongiosum (x1), extension of bulb

2. Corpus cavernosum (x2), extension of crura

21
Q

What tissue does the urethra of the penis run through

A

The corpus spongiosum

22
Q

What 2 nerves supply the majority of sensation to the pelvic area

A
  1. Pudendal nerve

2. Iliohypogastric nerve

23
Q

What are the 4 main perineal branches of the internal pudendal artery in males

A
  1. Deep artery of the penis
  2. Dorsal artery of the penis
  3. Artery of bulb
  4. Artery of penis
24
Q

What are the 4 sections of the male urethra

A
  1. Pre-prostatic
  2. Prostatic
  3. Membranous
  4. Penile (spongy)
25
What are the 4 main branches of the pudendal nerve in males
1. Inferior rectal 2. Perineal (superficial and deep branches) 3. Scrotal branches 4. Dorsal nerve of the penis
26
What is the root value of the pudendal nerve
S2, S3, S4
27
What tight piece of connective tissue helps to form the greater sciatic notch
Sacrospinous ligament
28
What are the 2 main branches of the pudendal nerve in females
1. Perineal nerve | 2. Dorsal nerve of the clitoris