Thyroxine & Triiodothyrine

THYROID GLAND

• One of the largest glands in the endocrine system.
• Found in the neck below the thyroid cartilage.
• Controls how quickly the body uses energy and makes proteins.

T3 & T4 EFFECTS

• Control metabolism.
• People with lower levels tend to produce more weight.
• People with higher levels tend to gain less weight.

DISORDERS

• Hypothyroidism is a lack of thyroid hormones.
• Two types:
• Cretinism-condition of severely stunted physical and mental growth
• Myxedema-swelling of the skin and underlying tissues giving a waxy consistency

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