Anatomy 5: Urogenital Triangle Flashcards Preview

Block I: Reproduction & Sexuality > Anatomy 5: Urogenital Triangle > Flashcards

Flashcards in Anatomy 5: Urogenital Triangle Deck (34):
1

4 boundaries of the pelvic outlet

  • Ischiopubic rami
  • Sacrotuberous ligaments
  • Coccyx
  • Pubic symphysis

2

2 divisions of the pelvic outlet

  • Urogenital triangle
  • Anal triangle

3

2 openings of the perineal membrane

  • Urethral opening
  • Vaginal opening

4

Define the perineal membrane

  • A tough, thin sheet of fascia covering the UG triangular area.
  • Dividing line between the deep perineal pouch and the superficial perineal pouch

5

Location of the deep perineal pouch

Superior to the perineal membrane

6

Location of the superficial perineal pouch

Inferior to the perineal membrane

7

Define the perineal body

Tendinous center of the perineum

8

Location of the perineal body (3 markers)

  • Midpoint of the line drawn between the ischial tuberosities
  • Posterior to the vestibule (opening) of the vagina or bulb of the penis
  • Anterior to the anal canal

9

4 muscles attached to the perineal body

  • Levator ani
  • Superficial transverse perineal muscle
  • Deep transverse perineal muscles
  • Bulbospongiosus muscle

10

How may the perineal body be damaged and what may the consequence be?

  • Due to difficult childbirth
  • Injury --> potential prolapse of pelvic viscera if not repaired

11

Location of bulbourethral gland/Cowper's gland (males)

Deep perineal pouch, piercing the perineal membrane to enter the penile urethra

12

Function of bulbourethral glands

Secrete pre-ejaculate to lubricate the urethra and neutralize traces of acidic urine

13

5 components of the deep perineal pouch (male)

  • Bulbourethral gland/Cowper's gland
  • Perineal vessels and nerves
  • Urethra (membranous part)
  • Deep transverse perineal muscle
  • External urethral sphincter

14

5 components of the deep perineal pouch (female)

  • Perineal vessels and nerves
  • Urethra (proximal part for females)
  • Deep transverse perineal muscle
  • Vagina
  • External urethral sphincter muscle

15

8 components of the superficial perineal pouch (female)

  • Body of clitoris containing corpora cavernosa
  • Clitoris (glans)
  • Crus of clitoris
  • Urethral orifice
  • Vaginal orifice
  • Greater vestibular gland
  • Bulb of vestibule
  • Fourchette

16

Homologue in females to the bulbourethral glands of the male

Greater vestibular gland

17

Function of the greater vestibular gland

Secrete mucus to lubricate the vagina

18

6 erectile tissues and muscles of the superficial perineal pouch (female)

  • Ischiocavernosus muscle
  • Bulbospongiosus muscle
  • Superficial transverse perineal muscle
  • Crus of the clitoris
  • Blub of the vestibule
  • Levator ani

19

4 vessels of the neurovascular supply in the superficial perineal pouch (female)

  • Perineal vessels
  • Perineal nerves
  • Internal pudendal artery and vein
  • Pudendal nerve

20

4 erectile tissues and muscles of the superficial perineal pouch (male)

  • Ischiocavernosis muscle
  • Bulbospongiosus muscle
  • Crus of the penis
  • Bulb of the penis

21

Location of perineal vessels and nerves in males

Deep and superficial perineal pouches

22

Identify the 2 parts

  1. Ischiocavernosus muscle
  2. Bulbospongiosus muscle

23

Identify the 3 parts

  1. Ischiocavernosus muscle
  2. Bulbospongiosus muscle
  3. Crus

24

Identify the 3 parts

2. Bulbospongiosus muscle

3. Crus

4. Bulb of the vestibule

25

3 divisions of the urethra (males) and their respective lengths

  • Prostatic urethra (3 cm)
  • Membranous urethra (1.25 cm)
  • Penile (spongy) urethra (15 cm approx)

26

Location of the penile urethra

Enclosed by the bulb and corpus spongiosum of the penis

27

3 connective tissue layers of the penis body

  • Tunica albuginea
  • Buck`s fascia (deep fascia)
  • Dartos fascia (superficial fascia)

28

Describe the blood supply of the penis

  • Superficial dorsal veins between the Dartos and Buck fascias
  • Deep dorsal vein, Dorsal artery and nerve between Buck`s fascia and tunica albuginea
  • Deep arteries in the corpus cavernosum and spongiosum

29

9 layers of the scrotum from outermost to innermost

  1. Skin
  2. Dartos fascia and muscle
  3. External spermatic fascia (from external oblique)
  4. Cremaster muscle (from interal oblique)
  5. Internal spermatic fascia (from transversalis fascia)
  6. Tunica vaginalis -- parietal
  7. Tunica vaginallis -- cavity (peritoneum)
  8. Tunica vaginalis -- visceral
  9. Tunica albuginea

30

4 male pelvis fascias

  • Scarpa`s fascia
  • Dartos fascia
  • Colles fascia
  • Buck`s fascia

31

Locatoin of scarpa's fascia

Superficial fascia in the abdomen

32

Location of dartos fascia

Superficial fascia on the penis and scrotum

33

Location of Colles fascia

Superficial fascia in perineum

34

Location of Buck's fascia

Deep fascia on the penis