Final answer:
The type of tube that leads directly into the bladder is the ureter. Ureters connect the kidneys with the urinary bladder and propel urine through peristalsis. They enter the bladder obliquely to create a one-way valve.
Step-by-step explanation:
The type of tube that leads directly into the bladder is the ureter. Ureters are tube-like structures that connect the kidneys with the urinary bladder. As urine passes through the ureters, it is propelled by waves of peristalsis, which are contractions of smooth muscle in the walls of the ureters. The ureters enter the bladder and pierce its wall obliquely, creating a one-way valve that allows urine into the bladder but prevents reflux back into the ureters.