Tracy is diagnosed with enlarged thyroid gland which over- produces thyroid hormones. Describe the effect of over- production of thyroid hormones. Describes the feedback mechanism for this homeostatic control. Please help.

Explanation:

Medical procedures: Thyroidectomy

Therapies: Radioactive iodine therapy

Cardiovascular system: Thyroid hormones increases heart rate, cardiac contractility and cardiac output. They also promote vasodilation, which leads to enhanced blood flow to many organs.

Central nervous system: Both decreased and increased concentrations of thyroid hormones lead to alterations in mental state. Too little thyroid hormone, and the individual tends to feel mentally sluggish, while too much induces anxiety and nervousness.

Reproductive system: Normal reproductive behaviour and physiology is dependent on having essentially normal levels.

Medical procedures: Thyroidectomy.

Therapies: Radioactive iodine therapy of thyroid hormone. Hypothyroidism in particular is commonly associated with infertility

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