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endocrine
| Term | Definition |
|---|---|
| pineal gland | a small endocrine gland in the brain that secretes melatonin and regullates sleep-wake cycles |
| hypothalamus | a region of the brain that links the nervous system to the endocrine system and controls the pituary gland |
| pituitary gland | the master gland of the endocrine system that controls other endocrine glands |
| thyroid gland | a gland in the neck that regulates metabolism through thyroid hormones |
| thymus | a gland behind the sternum that helps develop t cells for immune function |
| adrenal gland | glands located above the kidneys that produce adrenaline and cortisol |
| pancreas | a gland that regulates blood sugar by producing insulin and glucagon |
| ovary | female reproductive gland that produces estrogen and progesterone |
| testis | male reproductive gland that produces testosterone and sperm |
| hormone | a chemical messenger released into the bloodstream to regulate body functions |
| endocrine systems | a system of glands that secrete hormones directly into the bloodstream |
| gland | an organ that produces and releases substances such as hormones |
| receptor cell | a cell that binds to a specific hormone |
| target cell | a cell affected by a specific hormone because it has the correct receptor |
| estrogen | female sex hormone responsible for reproductive development and menstrual cycle regulation |
| progesterone | a male sex hormone responsible for male characteristics and sperm production |
| insulin | a hormone produced by the pancreas that lowers blood glucose levels |
| cortisol | a stress hormone produced by the adrenal glands that regulates metabolism and immune response |
| adrenaline | a hormone that prepares the body for fight or flight |
| vasopressin | a hormone that regulates water balance and blood pressure |
| growth hormone | a hormone from the pituitary gland that stimulates growth and cell reproduction |
| postive feedback loop | a process in which a change causes more of the same change |
| negative feedback loop | a process in which a change triggers a response that reverses the change |
| type 1 diabetes | an autoimmune disorder in which the pancreas produces little or no insulin |
| type 2 diabetes | a condition in which the body becomes resistant to insulin or does not produce enough |