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Hormone
A protein that carries chemical messages around the human body dissolved in the blood
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Exocrine
ducted glands, tubes carry products secreted by glands
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Give an example of an exocrine gland
kidney, sweat gland, pancreas, liver
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Endocrine gland
Ductless glands that secrete hormones into the blood.
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Give an example of an endocrine gland
parathyroid, hypothalamus, adrenal glands
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Feedback mechanism
When one hormone controls the level of itself or another hormone in the blood or the amount produced a gland
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Positive feedback mechanism
production of one hormone increases the production of a second hormone
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give an example of a positive feedback mechanism
high levels of TSH increase the production of thyroxine in the thyroid
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Negative feedback mechanism
the production of the second hormone (thyroxine) results in a decrease of the first hormone (TSH) by a gland (pituitary)
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Give an example of a negative feedback mechanism
high levels of thyroxine now cause a decrease in TSH in the pituitary gland
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Describe the thyroxine hormone
produced in the thyroid (in the throat)
function: controls metabolic rate,growth and development)
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Describe all info about thymosin hormone
produced Thyamus (Thoracic cavity)
Maturing lymphocytes
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Describe all info about insulin hormone
Islets of Langerhans (pancreas endocrine)
regulates blood sugar levels.
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Describe all the pancreatic juices (lipase, amylase)
Produced in the pancreas (exocrine)
digestion of food
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Describe all info about the adrenaline hormone
Adrenal (abdominal)
flight or flight
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Describe all info about oestrogen
produced in the ovary (pelvic region)
maintenace of the endometrium
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Describe all the info on testosterone
Produced in the testis (outside body)
develop male sexual characteristics
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