The vas deferens receives duct from the seminal vesicle and opens into urethra as

1. epididymis                                           

2. ejaculatory duct

3. efferent ductule                                     

4. ureter

  (b) The vas deferens is a continuation of the cauda epididymis (tail parl of epididymis). It is about 40 cm long and slightly coiled at first bul becomes straight as it enters the abdominal cavity through the inguinal canal
Here, it passes over the urinary bladder, curves round the ureter and joins a duct from seminal vesicle and opens into urethra as the ejaculatory duct. These ducts store and transport the sperms from the testis to the outside through urethra.