Page 71 - Biology_Form_3

Chapter

Three

FOR ONLINE READING ONLY
Endocrine system

Introduction

The endocrine system is one of the body’s primary regulatory systems,
responsible for maintaining homeostasis by releasing hormones. These
hormones control various physiological functions, including metabolism,
growth, reproduction, and stress response. Unlike the nervous system,
which uses electrical impulses to transmit signals rapidly, the endocrine
system communicates through chemical messengers released into the
bloodstream. In this chapter, you will learn about endocrine system in
humans. The competencies developed from this chapter will enable you to
make healthier choices and better manage endocrine-related conditions,
such as hormonal disorders and stress effectively.

Think transported to target tissues and organs.
Hormones are chemical messengers; that
trigger specific physiological responses to
maintain homeostasis and ensure proper
Concept of endocrine system
functioning of the body.
Task 3.1

Search for information from the library The endocrine system plays a crucial role
and internet sources on the concept of in coordinating activities across different
the endocrine system. organs and systems. It regulates metabolism,
growth, reproduction, mood, and stress
The endocrine system is a network of responses. The pancreas is a unique gland
specialized glands that produce and release as it serves both endocrine and exocrine
hormones to regulate various body processes. functions, producing digestive enzymes
Unlike the exocrine glands, which releases such as amylase, protease and lipase for
secretions through ducts, endocrine glands exocrine secretion while also releasing
are ductless, meaning their hormones are insulin and glucagon into the bloodstream
directly released into the bloodstream and for endocrine regulation.

64

23/10/2025 11:52:41
BIOLOGY FORM 3 FINAL EDITED 16.09.2025.indd 64
BIOLOGY FORM 3 FINAL EDITED 16.09.2025.indd 64 KAMISHNA 23/10/2025 11:52:41

KAMISHNA