Thyroid gland

• in the lower part of the neck

• stimulated in the hypothalamus and pineal gland

hormones

• Thyroxine (T4) and Triiodothryrionine (T3)

  • regulate metabolism and body heat production and control cellular oxygen usage and maintain blood pressure

    • too much- hyperthyroidism, heart palpations, muscle tremors, and increased metabolism

    • not enough- hypothyroidism, decreased metabolism, goiter, and fatigue

• Calcitonin

  • reduced the calcium levels in the blood

    • too much- decreases bone loss, decreases Ca in blood

    • not enough- reduced bone density