text: <unk>  are located in the testicles, and are the specific location of meiosis, and the subsequent creation of gametes, namely spermatozoa.
  The epithelium of the<unk> consists of sustentacular or Sertoli cells, which are tall, columnar type cells that line the<unk> 
  In between the Sertoli cells are spermatogenic cells, which differentiate through meiosis to sperm cells.
  There are two types: convoluted and<unk> raight.
option_0: Seminiferous tubules
option_1: Excretory duct of seminal gland
option_2: Renal tubule
option_3: Renal corpuscle
option_4: Concha bullosa
option_5: Distal convoluted tubule
option_6: Juxtaglomerular cell
option_7: Thin ascending limb of loop of Henle