Thyroid Hormone

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Human Anatomy

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Thyroid Hormone

Hypothyroidism or Hashimoto thyroiditis; is a condition in which the body lack a sufficient thyroid hormone. Since the main purpose of the thyroid hormone is to "run" the body's metabolism, it is understandable that people with this condition will have symptoms of a slow metabolism. This disease is most common in women between the ages of 30 and 50.

There are two fairly common causes of hypothyroidism. The 1st is a result of previous(or currently ongoing)inflammation of the thyroid gland, which leaves a large % of the cells of the thyroid damaged(or dead)and incapable of producong sufficient hormone. The most common cause of thyroid failure is called autoimmune thyroiditis(a.k.a. Hashimoto's thyroiditis), a form of thyroid iflammation caused by the pt's own immune system.

The second major cause id the broad category of ''Medical Tx's''. The treatment of many thyroid conditions warrant surgical removal of a portion or all of the thyroid gland. If the total mass of thryroid producing cells left w/i the body are not enough to meet the needs of the body, the pt. will develop hypothyroidism.

Signs and Symptoms of Hypothyroidism:-fatigue,weakness-coarse,dry hair,hairloss-cold intolerance,constipatin-muscle cramps,frequent muscle aches-weight gain,difficulty losing weight-depression,irritability-memory loss,abnormal menstrual cycle-decreased libidoEach individual pt. may have any # if these symptoms, and they will vary with the severity of the thyroid hormone deficiency and the length of time the body has been deprived of the proper amount of hormone.

T3(3 Iodine Ions)TRIIODOTHYRONINEIncrease Energy & Protein Metabolism

T44 Iodine Ions)THYROXINEPrincipal HormoneIncrease Energy & Protein Metabolism

FUNCTION*Produces 2 Hormones that regulate Metabolism*Principal Hormones are known as Thyroxine T3 and Triiodothyronine T4 which increase the Metabolic rate in the body cells

STRUCTURE*Largest Endocrine Gland*2 roughly oval lateral lobes of either side of the Larnyx*Connected by a narrow band called ISTHMUS * Connective tissue capsule encloses enire gland

CalcitoninRegulates calcium MetabolismWorks with: Parathyroid and Vitamin D

THYROID HORMONE*Required for Normal Growth*Influences Rate we useNutrients for ATP & Heat*Influences Physical & Mental activities*Thyroid hormones are regulated by TSH Hormones which are produced by the ANTERIOR PITUITARY not THYROIDTSH = Thyroid stimulating hormone

Hyperthyroidism - Overactivity of the Thyroid gland with excessive hormone secretion. EX: Graves Disease.

SymptomsGoiterRapid PulseSweatingTremors (Especially in the hands)Quick MetabolismBulging Eyes

TreatmentsSuppression MedicationRadiation TherapySurgical Removal of All or Partial Thyroid Gland

American Thyroid Association on Hyperthyroidism


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