Penis Flashcards
1
Q
Parts
A
- Root
- Body
- Glans penis
2
Q
Root
A
Lies in perineum and consists of 3 structures:
1. 2 Crura
2. Bulb
3
Q
Crura
A
- Posterior ends of the 2 corpora cavernosa of penis body 2. Attached to pubic arches and each covered by ischiocavernosus muscle
4
Q
Bulb
A
- Posterior end of corpus spongiosum of penis body
- Attached to perineal membrane
- Covered by bulbospongisosus muscle
- It is pierced by
spongy urethra and bulbo-urethral glands ducts which open in spongy urethra
5
Q
Body
A
Free anterior part consisting
of 3 erectile tissue:
1. 2 corpora cavernosa: on dorsal aspect
2. 1 corpus spongiosum: on ventral aspect of corpora cavernosa and contains spongy urethra
6
Q
Glans penis
A
- Distal enlarged end of corpus spongiosum
- Covered by thin skin (prepuce) which is removed in circumcision and connected to external urethral meatus by median fold (frenulum)
7
Q
Ligaments
A
- Fundiform ligament (sling-like)
- Suspensory ligament of penis
8
Q
Fundiform ligament
A
Arises from lines alba inferior part and splits into 2 parts passing on each side of penis
9
Q
Suspensory ligament of penis
A
- Fibroelastic structure which spreads out from symphysis pubis anterior surface
- Fuses with deep fascia on penis dorsum and sides
10
Q
Arterial supply
A
Branches from internal pudendal artery:
1. 2 deep arteries
2. 2 arteries of bulb
3. Dorsal arteries
11
Q
2 deep arteries
A
- Each runs inside corpus cavernosum supplying it
- Each breaks into small tortuous helecine arteries supplying blood during erection
12
Q
2 arteries of bulb
A
Each runs inside penis bulb then in corpus spongiosum alongside urethra
13
Q
Dorsal arteries
A
- Each runs lateral to deep dorsal veins of penis
- Supplies penis skin and fascia
14
Q
Venous drainage
A
- Superficial dorsal vein
- Deep dorsal vein
15
Q
Superficial dorsal vein
A
- Runs superficial to penis fascia in median plane of penis dorsum
- It drains into great saphenous vein
