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.
The following are symptoms of having an overactive thyroid gland (hyperthyroidism): 1  Being restless, nervous, emotional, irritable, sleeping poorly and being 'always on the go'. 2  Tremor of your hands. 3  Losing weight despite an increased appetite.  The sensation of having a 'thumping heart' (palpitations).