Osmotic pressure can be described as the pressure of a water solution of salts exerted in either direction against a semipermeable membrane. This pressure is caused by differences between the concentrations of dissolved salts within the body and those outside, in the sea.â¦
Thyroid gland: A gland that makes and stores hormones that help regulate the heart rate, blood pressure, body temperature, and the rate at which food is converted into energy. Thyroid hormones are essential for the function of every cell in the body.
The thyroid hormones are tyrosine-based hormones produced by the thyroid gland that are primarily responsible for regulation of metabolism. T 3 and T 4 are partially composed of iodine (see molecular model). A deficiency of iodine leads to decreased production of T 3 and T 4, enlarges the thyroid tissue and will cause the disease known as simple goitre.