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.
Many symptoms of an underactive thyroid (hypothyroidism) are the same as those of other conditions, so it can easily be confused for something else. Symptoms usually develop slowly and you may not realise you have a medical problem for several years.Common symptoms include: 1  tiredness. 2  being sensitive to cold. 3  weight gain. 4  constipation. 5  depression. 6  slow movements and thoughts. 7  muscle aches and weakness.ymptoms usually develop slowly and you may not realise you have a medical problem for several years. Common symptoms include: 1  tiredness. 2  being sensitive to cold. 3  weight gain. 4  constipation. 5  depression. 6  slow movements and thoughts.