Scrotum

Question 1

Definition

Answer 1

1. Skin and subcutaneous bag containing:
   - testes
   - epididymis
   - spermatic cords lower parts of both sides
2. Corresponds to female labia majora

Question 2

External features: externally

Answer 2

Divided externally into right and left halves by median raphe at its middle

Question 3

External features: internally

Answer 3

Divided by median septum formed by dartos muscle and fascia between both sides of scrotum

Question 4

External features: scrotum left side

Answer 4

Hangs lower than right skin is corrugated due to presence of dartos muscle

Question 5

Layers

Answer 5

From outside inwards
1. Skin
2. Dartos muscle
3. Superficial fascia membranous layer
4. External spermatic fascia
5. Cremasteric muscle and fascia
6. Internal spermatic fascia
7. Tunica vaginalis parietal layer

Question 6

Atrial supply

Answer 6

1. Scrotal arteries: from internal pudendal artery
2. Cremasteric artery: from inferior epigastric artery
3. Superficial external pudendal artery: from femoral artery
4. Deep external pudendal artery : from femoral artery

Question 7

Lymph drainage

Answer 7

Superficial Inguinal lymph nodes

Question 8

Nerve supply: sensory

Answer 8

Sensory:
Anterior 1/3 (L1):
1. Ilioinguinal and genital branch of genitofemoral nerve
Posterior 2/3 (S3):
1. Scrotal branches of pudendal nerve and perineal branch of posterior cutaneous nerve of thigh

Question 9

Nerve supply: motor

Answer 9

Motor:
1. Sympathetic supply to dartos reaching it through Cremasteric nerve (branch of genitofemoral nerve