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The Thyroid
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Located at
Double lobed.
Produces THYROXINE –
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Hypersecretion of thyroxine:
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Hyposecretion of thyroxine:
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Negative Feedback Loop
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The thyroid also produces a hormone called _____________________.
The Parathyroid
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There are ________ parathyroid glands located within the thyroid.
Produce ______________________________________.
PTH promotes ________________________________________________
PTH also promotes ____________________________________________
Feedback Loops
Draw feedback loops for the following hormonal systems:
1. Stress Hormones (cortisol)
2. Blood sugar regulators (insulin/glucagon)
3. Metabolism (thyroid)
4. Growth Regulators (hGH)
5. Water regulators (ADH, aldosterone)
6. Calcium regulators (PTH, calcitonin)
7. Circadian cycle (melotonin)
L) Dysfunctions of the Endocrine System
1) Anterior Pituitary
hGH
Dwarfism
Gigantism
Acromegaly
2) Posterior Pituitary
ADH
Diabetes Insipidus
3) Thyroid Gland
Thyroxine
Cretinism
Adults with Hypothyroidism (Myxedema)
Adults with Hyperthyroidism
Graves’ Disease
Goitre
4) Pancreas
Insulin
Diabetes Mellitus Type I
Diabetes Mellitus Type II