Endocrine-Week 1 Flashcards
Enzyme that converts Testosterone to Dihydrotestosterone
5-Alpha Reductase
Which is the more potent form of testosterone?
Dihydrotestosterone
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)?
Intermediate mesoderm
Hormone secreted by Leydig cells?
Testosterone
Hormone secreted by Sertoli Cells
Inhibin
Hormone that stimulates Sertoli cells
FSH
Mullerian Inhibiting factor (MIF) is secreted by which cell type?
Sertoli cells
Crystals of Reinke are found in what cell type?
Leydig cells
The acrosomal cap of the sperm contains which two enzymes?
1) Hyaluronidase
2) Neuraminidase
What forms the blood-testis barrier?
Sertoli cell-to-Sertoli cell tight junctions
Sperm is produced in which part of the testes?
Seminiferous tubule
The efferent ductules are lined with:
Pseudostratified columnar epithelium
Most prostatic carcinomas arise from which zone of the prostate?
Peripheral zone
Which zone of the prostate is associated with benign prostatic hyperplasia (BPH)?
Transitional zone
Lymph from the scrotal skin typically drains to:
the superficial inguinal lymph nodes
Lymph from the testes drains to:
Para-aortic lymph nodes
Which nerve provides sensory innervation to the anterior part of the scrotum?
Ilioinguinal nerve
Which nerve provide sensory innervation to the posterior part of the scrotum?
Pudendal nerve
The lymphatics of the penis drain primarily to the:
Deep inguinal lymph nodes and external iliac lymph nodes
The lymphatics of the epididymis drains primarily to the:
Para-aortic lymph nodes
The lymphatic drainage of the vas deferens generally drains to:
Internal iliac lymph nodes
The lymphatic drainage of the seminal vesicles and prostate:
Internal iliac lymph nodes
The skin and superficial tissues of the penis and scrotum drain to the:
Superficial inguinal lymph nodes
The prostatic and membranous portions of the urethra generally drain to the: (lymph node)
Internal iliac lymph nodes
The spongy (penile) portion of the urethra drains to the: (lymph nodes)
Deep and superficial inguinal lymph nodes
