Urination
Level
Form 1
Subject
Biology
Topic
Introduction to biology
Sub-topic
Concept and terminologies of biology
Micturition (peeing) starts with urine flowing from the kidneys to the bladder via ureters. The bladder expands using transitional epithelium. Urine exits through the urethra, controlled by internal and external urethral sphincters. Ureters prevent backflow, thereby reducing infection risk
Language
English
Resource Type
Publisher
Khan Academy
Publication Date
2014
Copyright Licence
CC BY-NC-SA
Copyright Holder
Khan Academy
Keyword