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Biology for Secondary Schools
Excretion in humans .........................................................................................83
Urinary system .................................................................................................84
Other excretory organs in humans ....................................................................92
Common complications and disorders of the excretory system .......................94
FOR ONLINE READING ONLY
Revision exercise 4 ...........................................................................................100
Chapter Five ........................................................................................................104
Regulation ............................................................................................................104
Concept of regulation .......................................................................................104
Homeostatic mechanisms .................................................................................105
Types of regulation ...........................................................................................109
Thermoregulation .............................................................................................110
Osmoregulation ................................................................................................119
Blood sugar regulation .....................................................................................122
Revision exercise 5 ...........................................................................................128
Glossary ................................................................................................................ 132
Bibliography ........................................................................................................ 142
Index ................................................................................................................... 144
iv Student’s Book - Form Three
23/10/2025 11:52:26
BIOLOGY FORM 3 FINAL EDITED 16.09.2025.indd 4
BIOLOGY FORM 3 FINAL EDITED 16.09.2025.indd 4 KAMISHNA 23/10/2025 11:52:26 KAMISHNA
