CAIE IGCSE Biology 13.1.3 Kidneys, Ureters, Bladder & Urethra
Practise identifying the kidneys, ureters, bladder and urethra in diagrams and tracing urine from formation to excretion.
- Syllabus
- 2026–2028
- Course
- Biology 0610
Practise identifying the kidneys, ureters, bladder and urethra in diagrams and tracing urine from formation to excretion.
The diagram shows the human excretory system.
Which labelled structure is the urethra?

D