Structure of the Testes and Male Reproductive Tract
The testes contain two functional units: interstitial or Leydig cells that contain the enzymes for androgen synthesis; and a tubule network that is involved in the production and transport of sperm (Fig. 11.1).
See later:
ΓÇó Leydig Cells
ΓÇó Spermatogenic Tubules and Sertoli Cells
ΓÇó Other Components of the Male Reproductive Tract