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Understanding the Endocrine System: Structures, Signaling Types, and Feedback Mechanisms

Explore the intricate structures, signaling types, and feedback mechanisms of the endocrine system. Learn about key structures like the hypothalamus, thyroid, and adrenal glands, and the different signaling modes including autocrine, paracrine, and juxtacrine. Discover how positive and negative feedback mechanisms regulate hormone production and function.

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Understanding the Endocrine System: Structures, Signaling Types, and Feedback Mechanisms

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  1. The Endocrine System Structures The endocrine system has many structures. All of the structures include certain horomones. Certain structures include certain horomones.

  2. List of structures. Part 1 • Structures include • Hypothalamus, • Pineal Body, • Pituitary gland , • Thyroid, • Stomach, • Duodenum, • Liver, • Pancreas,

  3. List of structures. Part 2 • Kidneys, • Adrenal glands, • Testes, • Ovarian follicle , • Corpus luteum, • Placenta (when pregnant), • Uterus (when pregnant), • Parathyroid, • Skin, • Heart, • Bone marrow, and • Adipose tissue.

  4. This system has 3 signaling types. Signals include Autocrine, Paracrine, and Juxtacrine.

  5. Autocrine Signaling The Autocrine is a form of signaling in which a cell secretes (Generate) a hormone, or a chemical messenger that binds the autocrine receptors to the same cell, leading to changes to the cell.

  6. Paracrine Signaling Paracrine signalling is a form of cell signalling in which the target cell is near ("para" = near) the signal-releasing cell.

  7. Juxtacrine Signaling Juxtacrine signalling is a type of intercellular(situatedbetweenoramong cells) communication that is transmitted via oligosaccharide(carbohydrate), lipid(organic compounds that are greasy), or protein components of a cell membrane, and may affect either the emitting cell or the immediately adjacent cells.

  8. There are also 2 different types of feedbacks, Positive and negative

  9. Negative Signaling The stopping of the synthesis of an enzyme by the accumulation of the products of the enzyme-mediated reaction.

  10. Positive Feedback Biochemical control where the accumulation of the product stimulates production of an enzyme responsible for that product's production.

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