Testes, Scrotum, Inguinal Canal (Task 4)

Question 1

Function of dartos layer under scrotum skin

Answer 1

Wrinkles and pulls up skin for thermoregulation of testes

Question 2

Function of cremasteric muscles

Answer 2

Elevates Testes for Thermoregulation

Question 3

Layers of testicular fascia from skin inwards

Answer 3

Skin > Dartos > External Spermatic Fascia > Cremaster > Internal Spermatic Fascia > Tunica Vaginalis (anterior testicle only)

Question 4

Origin of cremaster muscle and fascia

Answer 4

Internal Oblique

Question 5

Origin of external spermatic fascia

Answer 5

External Oblique

Question 6

Origin of internal spermatic fascia

Answer 6

Transversalis Fascia

Question 7

What nerves does cremasteric reflex test

Answer 7

Ilioinguinal (sensory) and Genital Branch of Genitofemoral (Motor)
Both L1

Question 8

Region that fills with fluid in hydrocele

Answer 8

Tunica Vaginalis

Question 9

Blood supply to scrotum

Answer 9

Anterior Scrotal Artery from External Pudendal

Posterior Scrotal Artery Internal Pudendal

Question 10

Venous drainage from scrotum

Answer 10

Scrotal Veins > External Pudendal

Question 11

Lymphatic drainage of scrotum

Answer 11

Superficial Inguinal Lymph Nodes

Question 12

Innervation to scrotum

Answer 12

Anterior Scrotum supplied by Genital branch of Genitofemoral and Ilioinguinal
Posterior Scrotum supplied by Perineal branches of Pudendal and Femoral Cutaneous

Question 13

Cells that produce testosterone

Answer 13

Leydig Cells

Question 14

Cells that help nurture sperm

Answer 14

Sertoli Cells

Question 15

Innervation of testes and epididymis

Answer 15

Testicular Plexus derived from Renal and Aortic Plexuses

Question 16

Blood supply to testes and epididymis

Answer 16

Paired Testicular Arteries from Abdominal Aorta
Cremasteric Artery from Inferior Epigastric
Artery of Vas Deferans from Inferior Vesical

Question 17

Venous drainage of testes and epididymis

Answer 17

Paired Testicular Veins formed in Pampiniform Plexus
Left Testicular > Left Renal
Right Testicular > IVC

Question 18

Lymphatic drainage of testes and epididymis

Answer 18

Lumbar and Para-Aortic Lymph Nodes

Question 19

Surface marking of superficial inguinal ring

Answer 19

Just above pubic tubercle

Question 20

Surface marking of deep inguinal ring

Answer 20

Midpoint between pubic tubercle and anterior superior iliac spine

Question 21

Bowel herniation through deep inguinal ring

Answer 21

Indirect Inguinal Hernia (Medial and Posterior to Epigastric vessels)

Question 22

Bowel herniation through weak abdominal wall

Answer 22

DIrect Inguinal Hernia (Lateral to Epigastric Vessels)

Question 23

Failure of testes to descend into pelvis

Answer 23

Cryptochidism

Question 24

Reasons why varicocoele is more common in the left testicle

Answer 24

Angle formed by left testicular and left renal veins

Increased pressure from aorta and superior mesenteric compressing left renal vein