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Understanding the Endocrine System: Hormones, Glands, and Regulation

Discover how the endocrine system regulates metabolism, growth, and more. Learn about hormones, glands, feedback mechanisms, and disorders like diabetes and goiter.

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Understanding the Endocrine System: Hormones, Glands, and Regulation

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  1. Endocrine System

  2. Endocrine System • Regulates overall metabolism, homeostasis, growth and reproduction • Glands – are organs that specialize in the secretion of substances needed by an organism • Hormones – are the secretions produced by the endocrine glands - released into the bloodstream

  3. Chemical Regulation: Effect on the body: • Hormones are specific to a target organ or tissue to stimulate or inhibit • Response of system is slower than nervous system because it must travel through the blood to reach target • Effect of hormone- last minutes to hours or even years

  4. Organs of the Endocrine System :

  5. Organs of the Endocrine System:

  6. Organs of the Endocrine System:

  7. Feedback Mechanisms • Negative Feedback– is when an activity alters a condition in the body, and this triggers a series of events that reverses the altered condition Ex. Body temperature • When body temp. goes up, we sweat • When body temp. goes down, we shiver Ex. Blood sugar levels • When blood sugar goes up, insulin lowers blood sugar • When blood sugar goes down, glucagon raises blood sugar

  8. Feedback Mechanisms (continued) • Positive Feedback – is when a change initiates a response, and that response intensifies the original change Ex. Contractions of the uterus during childbirth Endocrine System Video

  9. Disorders • Diabetes – is a disease where a person cannot produce insulin • Inability of the body to store sugar as glycogen • Goiter – is enlargement of the thyroid gland caused by iodine deficiency

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