The thyroid gland

Article Abstract:

High levels of thyroid-stimulating hormone (TSH, thyrotrophin) indicate that the thyroid gland is underperforming, while low levels indicate that it is overperforming. Autoimmune disease is generally responsible for both overactivity and underactivity of the thyroid gland. It is easy to test for the destructive antibodies responsible for hypothyroidism, or underactivity, but it is difficult and expensive to measure thyroid-stimulating antibodies. Hashimoto's thyroiditis is a common cause of hypothyroidism, while Graves' disease is a common cause of hyperthyroidism or overactivity.

Study and teaching, Thyroid diseases, Thyrotropin

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Systems of life: bone and bones 3

Article Abstract:

Hypocalcaemia (low calcium), hypercalcaemia and bone fractures are studied. Diagrams show the causes of hypocalcaemia and hypercalcaemia and the way the body corrects the disorders. Clinical effects and treatment procedures are also given. Diagrams also show different types of fracture and how a fracture heals, with complications of healing and the principles of treatment listed.

Care and treatment, Education, Nurses, Calcium in the body, Calcium (Nutrient), Fractures (Injuries), Fractures

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Systems of life, muscle 2

Article Abstract:

A compilation of various muscle diagrams includes the microstructure of voluntary muscle, muscle fibre, sarcomere, motor unit, contraction of voluntary muscle and how the muscle contracts.

Portrayals, Muscles

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