Endocrine-Week 1

Question 1

Enzyme that converts Testosterone to Dihydrotestosterone

Answer 1

5-Alpha Reductase

Question 2

Which is the more potent form of testosterone?

Answer 2

Dihydrotestosterone

Question 3

What embryonic cell type forms the urogenital ridges on the posterior abdominal wall, giving rise to Leydig cells (interstitial cells) and myoid cells (peritubular contractile cells)?

Answer 3

Intermediate mesoderm

Question 4

Hormone secreted by Leydig cells?

Answer 4

Testosterone

Question 5

Hormone secreted by Sertoli Cells

Answer 5

Inhibin

Question 6

Hormone that stimulates Sertoli cells

Answer 6

FSH

Question 7

Mullerian Inhibiting factor (MIF) is secreted by which cell type?

Answer 7

Sertoli cells

Question 8

Crystals of Reinke are found in what cell type?

Answer 8

Leydig cells

Question 9

The acrosomal cap of the sperm contains which two enzymes?

Answer 9

1) Hyaluronidase
2) Neuraminidase

Question 10

What forms the blood-testis barrier?

Answer 10

Sertoli cell-to-Sertoli cell tight junctions

Question 11

Sperm is produced in which part of the testes?

Answer 11

Seminiferous tubule

Question 12

The efferent ductules are lined with:

Answer 12

Pseudostratified columnar epithelium

Question 13

Most prostatic carcinomas arise from which zone of the prostate?

Answer 13

Peripheral zone

Question 14

Which zone of the prostate is associated with benign prostatic hyperplasia (BPH)?

Answer 14

Transitional zone

Question 15

Lymph from the scrotal skin typically drains to:

Answer 15

the superficial inguinal lymph nodes

Question 16

Lymph from the testes drains to:

Answer 16

Para-aortic lymph nodes

Question 17

Which nerve provides sensory innervation to the anterior part of the scrotum?

Answer 17

Ilioinguinal nerve

Question 18

Which nerve provide sensory innervation to the posterior part of the scrotum?

Answer 18

Pudendal nerve

Question 19

The lymphatics of the penis drain primarily to the:

Answer 19

Deep inguinal lymph nodes and external iliac lymph nodes

Question 20

The lymphatics of the epididymis drains primarily to the:

Answer 20

Para-aortic lymph nodes

Question 21

The lymphatic drainage of the vas deferens generally drains to:

Answer 21

Internal iliac lymph nodes

Question 22

The lymphatic drainage of the seminal vesicles and prostate:

Answer 22

Internal iliac lymph nodes

Question 23

The skin and superficial tissues of the penis and scrotum drain to the:

Answer 23

Superficial inguinal lymph nodes

Question 24

The prostatic and membranous portions of the urethra generally drain to the: (lymph node)

Answer 24

Internal iliac lymph nodes

Question 25

The spongy (penile) portion of the urethra drains to the: (lymph nodes)

Answer 25

Deep and superficial inguinal lymph nodes