HBS: 2.2.1 Endocrine System
1. Endocrine Gland: - Definition: A gland that secretes hormones directly into the bloodstream.
2. Endocrine System: - Definition: A collection of glands that produce and release hormones to regulate metabolic processes
in the body. Key components include the pitui...
- Definition: A gland that secretes hormones directly into the bloodstream.
2. Endocrine System:
- Definition: A collection of glands that produce and release hormones to regulate metabolic processes
in the body. Key components include the pituitary, thyroid, parathyroid, adrenal glands, islets of
Langerhans, ovaries, and testes.
3. Exocrine Gland:
- Definition: A gland (such as sweat glands, saliva glands, or kidneys) that releases its secretions
externally or at the surface of an organ via ducts.
4. Gland:
- Definition: An organ or group of cells from epithelial tissue that filters substances from the blood,
modifies them, and releases them for various bodily functions or waste.
5. Glucagon:
- Definition: A hormone released by the alpha cells in the pancreas, which raises blood sugar levels by
promoting the breakdown of glycogen in the liver.
6. Hormone:
- Definition: A chemical messenger produced in specialized cells, circulating in body fluids and
coordinating various physiological functions by interacting with target cells.
7. Hypothalamus:
- Definition: Located in the forebrain, this structure plays a critical role in maintaining homeostasis by
coordinating the endocrine and nervous systems. It produces hormones for the posterior pituitary and
releasing factors that influence the anterior pituitary.
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