Cryptorchidism

Question 1

At what point in development do the testis descend

Answer 1

Between 8 weeks and full term

Question 2

Where do the testis develop during organogenesis

Answer 2

the fetal abdomen

Question 3

Through what structures do the testis descend during fetal development

Answer 3

Each testis descends from the abdomen into the inguinal canal through the deep inguinal ring. Each testis then passes anteromedially through the canal and enters the scrotum via the superficial inguinal ring

Question 4

Through what structure do the testis enter the scrotum

Answer 4

The superficial inguinal ring

Question 5

The superficial inguinal ring is a

Answer 5

physiologic opening in the external oblique muscle aponeurosis above the pubic tubercle.

Question 6

The deep inguinal ring is

Answer 6

an opening in the transversalis fascia bounded laterally by the transversus abdominis muscle and medially by the inferior epigastric vessels.

Question 7

The deep inguinal ring is an opening in the transversalis fascia bounded laterally by

Answer 7

the transversus abdominis muscle

Question 8

The deep inguinal ring is an opening in the transversalis fascia bounded medially by the

Answer 8

inferior epigastric vessels

Question 9

Cryptorchidism is

Answer 9

the failure of one or both testes to descend to the scrotum before birth.

Question 10

Cryptorchidism occurs more commonly in

Answer 10

preterm neonates

Question 11

Cryptorchidism is associated with a

Answer 11

significantly increased risk of testicular cancer and infertility

Question 12

A testis that is palpable in the inguinal canal typically

Answer 12

descends spontaneously by age 6 months

Question 13

Testes that have not descended by 6 months of age require

Answer 13

surgical intervention

Question 14

Surgical repair of an undescended testicle lodged in the inguinal canal involves

Answer 14

moving the testis through the superficial inguinal ring and fixing it in the scrotum.

Question 15

The superficial and deep inguinal rings are

Answer 15

physiologic openings in the external abdominal oblique aponeurosis and the transverse fascia respectively.

Question 16

The rectus muscle sheath is formed by the

Answer 16

confluence of the aponeuroses of the external and internal oblique muscles and the transversus abdominis muscle

Question 17

The internal oblique muscle aponeurosis contributes to the

Answer 17

formation of the conjoint tendon and rectus muscle sheath

Question 18

The cremaster muscle originates from the

Answer 18

internal oblique muscle itself

Question 19

The femoral ring is a

Answer 19

physiologic opening between the abdominal cavity and the femoral cnaal.

Question 20

The femoral ring transmits

Answer 20

lymphatic vessels but not the spermatic cord

Question 21

The conjoint tendon is the

Answer 21

common tendon of the transversus abdominis and internal oblique muscles.

Question 22

The _______ _______ is the posterior wall of the inguinal canal

Answer 22

Conjoint tendon