ISSN: 1755-5191

Imaging in Medicine

Endocrinology

 Endocrinology (from endocrine + -ology) is a branch of biology and medicine dealing with the endocrine system, its diseases, and its specific secretions known as hormones. It is also concerned with the integration of developmental events proliferation, growth, and differentiation, and the psychological or behavioral activities of metabolism, growth and development, tissue function, sleep, digestion, respiration, excretion, mood, stress, lactation, movement, reproduction, and sensory perception caused by hormones. Specializations include behavioral endocrinology and comparative endocrinology.   The endocrine system consists of several glands, all in different parts of the body, that secrete hormones directly into the blood rather than into a duct system. Therefore, endocrine glands are regarded as ductless glands. Hormones have many different functions and modes of action; one hormone may have several effects on different target organs, and, conversely, one target organ may be affected by more than one hormone. The human endocrine system consists of a number of glands, which release hormones to control many different functions. When the hormones leave the glands, they enter the bloodstream and are transported to organs and tissues in every part of the body. Both men and women have some androgen, but men have higher levels. Androgens control the development of characteristics associated with males, like facial hair and a deeper voice.

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