4. Human Body: Endocrine, Circulatory, and Nervous System
The human body regulates essential functions through three primary systems: the endocrine system, which uses hormones for chemical control; the circulatory system, which transports oxygen and nutrients via the heart-blood network; and the nervous system, which transmits rapid electrical signals for immediate responses. These systems work in concert to maintain homeostasis and respond to environmental stimuli.
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What we have learnt
- The endocrine system utilizes hormones for slow chemical responses.
- The circulatory system is responsible for delivering oxygen and nutrients throughout the body.
- The nervous system enables rapid responses to stimuli through electrical signals.
- All three systems integrate to ensure the body's functionality and adaptability.
Key Concepts
- -- Endocrine System
- A system that uses chemical signals (hormones) to regulate various bodily functions.
- -- Circulatory System
- A system that transports blood, nutrients, and oxygen to cells and moves waste away from them.
- -- Nervous System
- A system that uses electrical impulses to relay information and coordinate responses.
- -- Hormones
- Chemical messengers produced by glands that regulate physiological processes.
- -- Neural Pathway
- The route taken by electrical impulses through neurons to convey signals.
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