Histology of the male reproductive system Flashcards
The tunica albuginea is made up of which type of tissue?
Dense connective tissue
What is the inner part of the tunica albuginea called?
Tunica vasculosa
Tunica vasculosa is made up of which type of tissue?
Loose connective tissue
Each testis is divided into approximately how many lobules?
250
Each lobule of the testis consists of how many seminiferous tubules?
One to four
What are the two basic cell populations found in te seminiferous tubules?
Sertoli cells and spermatogenic cells
Which cells of the testes replicate and become mature sperm?
Spermatogenic cells
Which cells give the seminiferous tubules structural organization?
Sertoli cells
Which are the most immature spermatogenic cells?
Spermatogonia
Which are the most mature spermatogenic cells?
Spermatids
Tunica (lamina) propria or peritubular tissue is a multilayered connective tissue that lacks what?
Fibroblasts
Instead of fibroblasts, which cells are found in the tunica propria?
Myoid cells (peritubular contractile cells)
What type of fibers are in the tunica propria?
Collagen
The tunica propria (thickens/thins) as men age.
Thickens
Where are Leydig cells located?
In the connective tissue stroma of the testis
What is the function of Leydig cells?
Secretion of testoterone
What is spermatogenesis?
The process by which spermatogonia develop into sperm
What are the three distinct phases of spermatogenesis?
Spermatogonial phase, spermatocyte phase, spermatid phase
Which phase of spermatogenesis involves only mitosis?
Spermatogonial phase