MCQ
Homologous structures have
- ✓Similar origin but similar or dissimilar functions
- BDissimilar origin but similar functions
- CDissimilar origin but dissimilar functions
- DDissimilar origin and dissimilar structures
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Label $A, B$ and $C$
$I.$ $PCT$ $II.$ $DCT$
$III.$ Loop of Henle $IV.$ Collecting duct
Which contributes most in maintaining $pH$ of blood?