define the endocrine system
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The endocrine system is the collection of glands that produce hormones that regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among other things.
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Answer:
- The endocrine system consists of endocrine glands which are also called ductless glands as they lack ducts and release their secretions directly into the venous blood or lymph.
- These chemicals (hormones) are then taken up by the specific organs from the blood circulation to initiate a particular metabolic change.
- The endocrine system is slower than nervous system in terms of coordination and regulation because hormones are first secreted by glands and poured into blood, from there these are then transported to target tissues which also take time to respond.
- The endocrine system may take time but its effects and actions are long lasting and more varied, influencing all components of metabolism.
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