What is the target of thyroxine?
|Endocrine gland/ source of hormone||Hormone||Target organ or tissue|
|Thyroid||Thyroxine (T4) Triiodothyronine (T3)||Most tissues|
|Parathyroids||PTH (parathyroid hormone)||Bone, kidneys, intestine|
|Thymus (regresses in adulthood)||Thymopoetin||T-lymphocyte cells in blood|
What is the job of thyroxine and T4?
The thyroid is a small, butterfly-shaped gland located near the throat. Your thyroid makes hormones that regulate the way your body uses energy. It also plays an important role in regulating your weight, body temperature, muscle strength, and even your mood. Thyroxine, also known as T4, is a type of thyroid hormone.
What happens when thyroxine levels are high?
Hyperthyroidism (overactive thyroid) occurs when your thyroid gland produces too much of the hormone thyroxine. Hyperthyroidism can accelerate your body’s metabolism, causing unintentional weight loss and a rapid or irregular heartbeat. Several treatments are available for hyperthyroidism.
Which disease is caused by the deficiency of thyroxine in adults?
Too little production of thyroxine by the thyroid gland is known as hypothyroidism. It may be caused by autoimmune diseases, poor iodine intake or caused by the use of certain drugs.
Which disease is caused by deficiency of thyroxine in adults?
The body can also contain insufficient thyroxine, which is known as hypothyroidism. If it happens while the person is young, low thyroxine levels contribute to development problems. In adults, the metabolic deficiency of thyroxine can increase weight, problems in memory, infertility, fatigue, and stiffness in muscles.
What does thyroxine do to the human body?
Thyroxine plays a crucial role in heart and digestive function, metabolism, brain development, bone health, and muscle control. It affects almost all of the body’s systems, which means proper thyroxine levels are vital for health. This is why many doctors will test T4 levels along with the more common T3 levels when testing for thyroid disorders.
What do thyroid hormones do to your body?
Thyroid hormones play vital roles in regulating the body’s metabolic rate, heart and digestive functions, muscle control, brain development and maintenance of bones. How is thyroxine controlled?
How is thyroxine produced by the hypothalamus?
The hypothalamus secretes thyrotropin-releasing hormone which, in turn, stimulates the pituitary gland to produce thyroid stimulating hormone. This hormone stimulates the production of the thyroid hormones, thyroxine and triiodothyronine, by the thyroid gland.
Why is it important to check thyroxine levels?
It affects almost all of the body’s systems, which means proper thyroxine levels are vital for health. This is why many doctors will test T4 levels along with the more common T3 levels when testing for thyroid disorders. What Can Go Wrong with Thyroxine? Having too little thyroxine or too much thyroxine can cause health problems.
What effects does thyroxine have on the body?
Thyroxine is one of the main hormones secreted from the thyroid follicular cells. Within the body, thyroxine affects the body’s metabolism and has an effect on protein synthesis. It is also important for human growth and development, as it regulates bone growth and aids in the maturation of neurons.
What can too much thyroxine do to the body?
If your body releases too much thyroxine, you will suffer a condition called thyrotoxicosis . This can cause a goiter, which is a swelling of the neck because of an enlarged thyroid gland. Thyrotoxicosis can also cause menstrual irregularities, an increase in bowel movements, weight loss, heat intolerance, fatigue, and irritability .
What are the side effects of too much thyroxine?
When the body has too much thyroid hormone from an overdose of thyroxine, it can lead to hyperthyroidism . Some of the uncommon side effects include increased sweating, sensitivity to heat, diarrhea, and shaking. It can also cause mood changes such as nervousness, anxiety, and irritability.
What is the result of too much thyroxine?
If too much thyroxine is made, you can become very ill with tiredness, a fast heartbeat and weight loss. Initially the symptoms can mimic lots of other conditions. However, the diagnosis is usually made with a simple blood test.