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The Adrenal Medulla is the inner part of the adrenal gland. The hormones secreted effect the structures in the body that are under the control of the sympathetic nervous system, aiding the body to deal with stressful situations such as fright, attack or pursuit.he Thyroid itself secretes three main hormones: 1  Thyroxine contains iodine which is essential for the body's normal growth, and metabolism. 2  Triiodothyronine has similar functions to thyroxine. 3  Calcitonin causes a decrease in the concentration of calcium in the blood.
Symptoms of adrenal disorders should be reported to a physician. Symptoms of adrenal disorders should be reported to a physician. Disorders of the endocrine system affect the levels of hormones that circulate throughout the body. Glands, such as the pituitary, thyroid and adrenal glands, produce hormones. By regulating the amount of hormones they produce, these glands have a direct effect on the function of various organs. Hormones are chemical messengers that aid in instructing organs to increase or decrease productivity.