Perineum and External Genitalia Flashcards Preview

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Flashcards in Perineum and External Genitalia Deck (21):
1

covered with very thin skin that contains numerous nerve-endings and is therefore very sensitive to touch

glans or head of penis

2

anterior boundary of perineum

-inferior border of the symphysis pubis

3

posterior boundary of perineum

coccyx

4

lateral boundary of perineum

pubic arch, ischial tuberosities, sacrotuberous ligaments

5

external boundary of perineum

skin

6

internal boundary of perineum

separated from the pelvic cavity by the pelvic diaphragm

7

perineum divided into 2 triangles:

Urogenital
Anal

8

SURROUNDED BY AREOLAR ADIPOSE TISSUE WHICH OCCUPIES THE ISCHIORECTAL FOSSA

POSTERIOR OR ANAL TRIANGLE

9

Fibromuscular tissue at median plane between lower end of vagina and anal canal
Attachment for the external anal sphincter, pulbospiongosus, and superficial and deep transverse perineal muscles

PERINEAL BODY

10

SUPERFICIAL PERINEAL POUCH

Lined by Colles’ fascia inferiorly [superficially] and the perineal membrane superiorly [internally].
In the female, it lines the labia major, pudendal cleft, vestibule and labia minora; interrupted only by the urethral and vaginal openings.

11

Muscles of female superficial pouch

Ischiocavernosus
Bulbocavernosus (Bulbospiongosus)
Superficial Transverse Perineal

12

pair of small masses of erectile tissue [venous plexuses - Gray] on each side of the vaginal orifice, covered by the bulbo-spongiosus [bulbo-cavernosus] muscles of the perineum. They are the small homologues of the male’s bulb of the penis.

Bulbs of the Vestibule

13

are small [pea-sized] glands covered by the bulbs of the vestibule. Their slender ducts open externally at the sides of the vaginal orifice at about 4 and 8 o’clock.

Greater Vestibular Glands [of Bartholin] -

14

Inferior Boundary of Deep Perineal Pouch

perineal membrane

15

Superior Boundary of Deep Perineal Pouch

blending of the superior fascia of the urogenital diaphragm and the inferior fascia of the pelvic diaphragm

16

Contents of deep perineal pouch

1. sphincter urethra muscle
2. deep transverse perineal
muscle

17

Muscles of FEMALE DEEP PERINEAL POUCH

Muscles
1. External Sphincter urethra
2. Deep Transverse perineal

18

MALE SUPERFICIAL POUCH
Muscles

1. Ischiocavernosus
2. Bulbospiongiosus (bulbocavernosus)
3.Superficial transverse perineal

19

BRANCHES OF THE INTERNAL PUDENDAL ARTERY:

1.Transverse perineal

2.Posterior labial

3.Deep artery of the clitoris

4.Dorsal artery of the clitoris

5.Inferior rectal

20

MALE DEEP PERINEAL POUCH
Muscles

1. External sphincter Urethra m
2. Deep transverse
perineal m.

21

BRANCHES OF THE INTERNAL PUDENDAL ARTERY

1.Transverse perineal
2.Posterior labial
3.Deep artery of the clitoris
4.Dorsal artery of the clitoris
5.Inferior rectal

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