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Gross Anatomy 2 > Urogenital Triangle > Flashcards

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
Q

What are the 4 main branches of the pudendal nerve in males

A
  1. Inferior rectal
  2. Perineal (superficial and deep branches)
  3. Scrotal branches
  4. Dorsal nerve of the penis
26
Q

What is the root value of the pudendal nerve

A

S2, S3, S4

27
Q

What tight piece of connective tissue helps to form the greater sciatic notch

A

Sacrospinous ligament

28
Q

What are the 2 main branches of the pudendal nerve in females

A
  1. Perineal nerve

2. Dorsal nerve of the clitoris

Gross Anatomy 2 (28 decks)

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