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Hormones (Endocrine glands (Pituitary glands (Growth hormone - controls…
Hormones
Endocrine glands
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Thyroid glands
Thyroxine - controls rate of metabolism and rate of metabolism and rate that glucose is used up in respiration, and promotes growth
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Hormone vs Neurone
Hormone - communication by chemicals called hormones
Neurone - communication by electrical impulse called nerve impulse
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Types of hormones
Steroid hormone
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Hormone - receptor complex acts as a transcription factor which facilitates or inhibits the transcription of a specific gene
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Adrenal Gland
Adrenal cortex - outer region
Produces hormones vital to life
(cortisol, aldosterone)
Glucocorticoids
Cortisol which helps regulates metabolism by controlling how the body converts fats, protein and carbohydrate to energy. It helps regulate blood pressure and cardiovascular function in response to stress
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- Hormones secreted into blood as a result of a change in concentration of a particular substances or another hormone or nerve impulse.
- Hormones are transported in the blood plasma all over the body
- The hormones diffuse out of the blood and binds to specific receptors for that hormone, on the membrane or cytoplasm of the target cell.
- Once bound, the hormone stimulates the target cells to respond