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ENDOCRINE SYSTEM - Coggle Diagram
ENDOCRINE SYSTEM
NAME OF ORGANS
HYPOTALAMUS
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To maintain homeostasis, the hypothalamus is responsible for creating or controlling many hormones in the body.
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THYROİD GLAND
CALCİTONİN
It stimulates Ca2+ deposition in bones and decreases reabsorbtion of Ca2+ in
kidneys and increases excretion of Ca2+ by urine.
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THYROXINE
stimulate metabolism, influence development and maturation.
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There is no one target organ, all organs respond.
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ADRENAL GLAND
Adrenal Cortex
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SEXUAL HORMONES
produces estrogen, progesteron
and testosterone.
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GONADAL SEX HORMONES
growth, development, reproductive cycles and sexual behaviors.
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FEEDBACK MECHANİSMS
NEGATİVE FEEDBACK
the stimulus starts the process and a hormone (or product of its effects) causes the process to slow down or turn off
blood glucose regulation:
2- Eating a meal increases blood glucose
3-in response, insulin is secreted
4-Insulin brings about a decrease in blood glucose
Secretion of ADH
1-less water in blood
2-hypotalamus than ADH
3- kidney reabsorbs water
4-As blood becomes dilute,
5-ADH is no longer released
POSİTİVE FEEDBACK
the original process, ensuring it continues or speeding it up.
milk release from the mammary glands
1-Baby suckling stimulates oxytocin release
2- Oxytocin stimulates milk release
3- Continues suckling stimulates more oxytocin
childbirth
1-The hormone oxytocin stimulates and enhances labor contractions
2- the baby moves toward the birth canal
3-receptors send messages to the brain to produce oxytocin.
4-Oxytocin travels to the uterus through the bloodstream to contract stronger.
5-The contractions intensify and increase until the baby is outside the birth canal.
6- when receptors ends, oxytocin production stops
DİSEASES
PITUITARY GLAND
STH
During childhood; an excess of GH can cause gigantism, while a lack of GH can cause dwarfism
During adulthood, excess GH can cause acromegaly; characterized by excess growth of facial, hand, nose, cheek bones.
ADH
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water reabsorption decreases, too much water is excreted from the body
THYROİD GLAND
Goiter When the thyroid gland becomes enlarged due to diseases, iodine deficiency or tumors, the gland is referred to as a goiter.
Hypothyroidism, low secretion of thyroid hormones,
causes weight gain, lethargy, and intolerance to cold.
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Hyperthyroidism excessive secretion of thyroid hormones, causes high body temperature,
weight loss,high blood pressure
Graves in humans characterized by weight loss, irritability, muscle weakness, sleeping problems.
PANCREAS
DIABET TYPE 2
Many patients with type II diabetes can keep their blood sugar level within normal range by
managing their diets and exercising, and do not require insulin injection
This disorder develops gradually, usually in overweight persons over the age
of 40.
DIABET TYPE 1
There is marked decrease in the number of cells in the pancreas, resulting in insulin
deficiency.
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Fatty acids are used more as an energy source because there is not enough glucose that enter the
cell
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ADRENAL GLAND
Low levels of aldosterone results in Addison disease chracterized by low blood pressure, bronzing of skin and open to infections.
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PARATHYROID HLAND
Tetany Low calcium level increase excitability of nerve without rest and this results in continuous painful muscle contraction.
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