The main components of high-voltage electric transmission lines and associated facilities include: Transmission towers are the most visible component of the power transmission system. Their function is to keep the high-voltage conductors (power lines) separated from their surroundings and from each other.
It is not surprising then that some of the symptoms of hyperthyroidism are nervousness, irritability, increased perspiration, heart racing, hand tremors, anxiety, difficulty sleeping, thinning of your skin, fine brittle hair and weakness in your musclesâespecially in the upper arms and thighs.
When the thyroid gland does not produce enough hormone, the body uses energy at a slower pace than it should. This condition, underactive thyroid, is called hypothyroidism. Some of these symptoms -- fatigue, irritability, weight changes, and sleep problems -- are symptoms that may also indicate depression. Your doctor may order blood tests to determine levels of certain hormones, including: 1  thyroid stimulating hormone (TSH, which is released by the pituitary gland)  triiodothyronine (T3)