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Flashcards in Perineum Deck (28):
1

What are the components of the uterus?

Cervix: inferior 1/3
Body: superior 2/3
Fundus: rounded superior part of the body of the uterus

2

Function of the Ovarian Ligament?

Ovarian Ligament: attaches ovary directly to uterus

3

Function of the Ovarian Ligament?

suspends ovary laterally to pelvic wall

4

What is the route of the ureter in men and women?

Men – ureter under vas deferens

Women – ureter under uterine artery

5

Arterial supply of the anal canal?

Arterial supply: superior rectal artery above pectinate line and inferior rectal artery below pectinate line

6

Venous drainage of the anal canal?

Venous drainage: superior rectal vein above pectinate line inferior rectal vein below pectinate line

7

Innervation of the anal canal?

autonomic = inferior hypogastric plexus

somatic= inferior rectal nerve

8

What is the central tendon?

Central tendon/perineal body: site of attachment for most of the small muscles in the perineum (DO NOT CUT HERE)

9

What are the layers of the urogenital diaphragm from inferior to superior?

The layers of the urogenital diaphragm are inferior fascia of the UG diaphragm, the UG diaphragm proper, and the superior fascia of the UG diaphragm

10

What muscles comprise the pelvic diaphragm?

The coccygeus muscle and levator ani muscles

11

What is the blood and nerve supply of the perineal muscles?

All of these muscles are innervated by the perineal branch of the pudendal nerve
and are supplied by the internal pudendal artery.

12

What are the 3 important tubes of the penis?

2 corpora cavernosa
1 corpus spongiosum (NOT in the female)

Both tubes are composed of erectile tissue (sinuses that arteries dump into)

13

The urethra runs through the ____________.

The urethra runs through the corpus spongiosum.

14

What are the borders of the perineum?

Anterior boundary: pubic arch

Lateral boundaries: ischial spine and ischial tuberosity

Posterior boundary: sacrum and coccyx

Roof: pelvic diaphragm

15

What is in the male perineal superficial pouch?

superficial perineal muscles (Ischiocavernosus, Bulbospongiosus, Superior Transverse perineal muscles)

the crura and bulb

some of the neuro-vasculature

16

What is in the Male "Perineal Membrane" of the UG Diaphragm?

Inferior fascia
Pierced by the urethra

17

What is in the Male Deep Pouch of the UG Diaphragm?

Deep transverse perineus muscle

Sphincter urethrae - controls the urethra

Cowper’s glands of the male

18

What is in the Male Superior Fascia of the UG Diaphragm?

Superior fascia
Urethra

19

What are the main differences in the male and female perineum?

In females: splitting of the bulb to form the vagina

In females: the greater vestibular glands are in the superficial pouch

In males: the Cowper's glands are in the deep pouch

In males: there is a corpus spongiosum

20

What is in the female perineal superficial pouch?

superficial perineal muscles (Ischiocavernosus, Bulbospongiosus, Superior Transverse perineal muscles)

the crura and bulb

urethra

vagina

clitoris

some of the neuro-vasculature

21

What is in the female "Perineal Membrane" of the UG Diaphragm?

Inferior fascia
Pierced by the urethra and vagina

22

What is in the Male Deep Pouch of the UG Diaphragm?

Deep transverse perineus muscle
Sphincter urethra
Vagina

23

The ________ fascia is thicker than the ________ fascia of the UG diaphragm.

The inferior fascia is thicker than the superior fascia of the UG diaphragm.

24

What is the blood supply of the perineum?

Internal pudendal artery
I Pee Pee But Don't Dump
Inferior rectal
Posterior scrotal (or labial)
Perineal
Bulb
Deep artery of the penis or clitoris
Dorsal artery of the penis or clitoris

25

What is the innnervation of the perineum?

Pudendal nerve enters the perineum and splits into the perineal, posterior scrotal or labial, inferior rectal, and dorsal nerves of the penis or clitoris

26

The pudendal nerve goes out of the ____________ and crosses the ___________ to re-enter the __________.

The pudendal nerve goes out of the greater sciatic foramen and crosses the ischial spine to re-enter the lesser sciatic foramen.

27

The pudendal nerve splits in ___________.

The pudendal nerve splits in alcott’s canal(pudendal canal).

28

What is a straddle injury in males?

In males, something rips through the urethra, which can cause blood to fill the scrotum up to the arcuate line.