<unk>  (from<unk> ocrine + -ology) is a branch of biology and medicine dealing with the<unk> ocrine 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<unk>  and comparative<unk> . The<unk> ocrine 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,<unk> ocrine 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.
Endocrinology
Neuroendocrinology
Hematology
Immunohaematology
Hepatology
Andrology
Cardiology
NeuroQuantology