Page 112 - Biology_Form_3

Regulation

internal physiological conditions in case that cushions body organs such as heart
of changes in environmental conditions. and kidney. However, regulation helps the
Homeostasis regulates ratios of the body body to maintain its internal temperature
water and minerals, body temperature and by preventing overheating or excessive
levels of chemicals and concentration of cooling, ensuring enzymatic efficiency.
FOR ONLINE READING ONLY
carbon dioxide in the blood. Internal body temperature regulation is
also called thermoregulation. Regulation
Homeostasis involves complex interactions enhances adaptation to environmental
within multiple systems to maintain changes, thus increasing chances of its
stability in a changing environment. These survival.
interactions are facilitated by negative and
positive feedback mechanisms that involve Exercise 5.1
the nervous system, endocrine system,
and the gut microbiome. The ability of 1. Explain three body systems involved
an organism to adapt to environmental in maintaining internal stability.
changes, rather than merely resist them, is 2. Describe how homeostasis helps
considered a crucial aspect of homeostasis. an organism survive in a changing
Furthermore, it is considered as a self- environment.
regulatory process that regulates internal 3. Evaluate how maintaining a balanced
substances necessary to sustain the life of diet and regular exercise can impact
an organism. Without proper regulation, metabolic homeostasis.
even small imbalances could lead to serious 4. Explain how excretion helps
health problems or failure of body functions. maintain homeostasis. Provide real
life examples of how the failure of
Importance of regulation excretion affects body function.
The process of regulation is important to
the survival of living organisms because it
maintains favourable conditions such as pH, Homeostatic mechanisms
temperature, pressure of body tissue fluids Task 5.2
for proper functioning of cells, tissues and Search for information from the library
organs. These regulatory mechanisms work and internet sources about the concept
continuously and automatically, enabling of homeostatic mechanisms. Write short
the body to adapt to different environments, notes about the searched information.
recover from stress and fight diseases. It also
enables organisms to get rid of body wastes For the body to maintain homeostasis,
such as carbon dioxide, excess water and various organ systems must function
salts from the body. Excess materials are in an integrated manner. Homeostatic
stored in another form which is not harmful mechanisms have three interdependent
to the organism. For example, excess sugar components: a receptor, integrating or
is converted into glycogen or fat deposits

105

23/10/2025 11:52:46
BIOLOGY FORM 3 FINAL EDITED 16.09.2025.indd 105
BIOLOGY FORM 3 FINAL EDITED 16.09.2025.indd 105 KAMISHNA 23/10/2025 11:52:46

KAMISHNA