What gland controls the endocrine system Video
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Chapter List. They are glands of the exocrine system that secrete their essential product by way of a duct to some environment external to itself, either inside the body or on a surface of the body.
Exocrine glands are one of two types of glands in the human body, the other being endocrine glands, which secrete their products directly into the bloodstream. Examples of exocrine glands include the sweat glands, salivary glands, mammary glands, and liver.
They are glands of the endocrine system that secrete their products, hormones, directly into the blood rather than through a duct. The major glands of the endocrine system include the pineal gland, pituitary gland, pancreas, ovaries, testes, thyroid gland, parathyroid gland, hypothalamus and adrenal glands.
Functions of Thyroid Hormones
The hypothalamus and pituitary gland are neuroendocrine organs. Local chemical messengers, not generally considered part of the endocrine system, include autocrines, which act on the cells that secrete them, and paracrines, which act on a different cell type nearby. A hormone a class of signaling molecules produced by glands in multicellular organisms that are transported by the circulatory system to target distant organs to regulate physiology and behaviour.
Hormones have diverse chemical structures that include eicosanoids, steroids, amino acid source, peptides, and proteins. comtrols
Endocrine System Organs
The glands that secrete hormones comprise the endocrine signaling system. The term hormone is sometimes extended to include chemicals produced by cells that affect the same cell autocrine or intracrine signalling or nearby cells paracrine signalling. Structure of the pituitary is small about the size of the large pea.
Anterior lobe and intermediate lobe collectively also called adeonohypophysis and posterior lobe also called neurohypophysis. Stimulate ovulation from progesterone and estrogen in female.
In male it activate to secret testosterone hormone. Hyposecretion, falls on the blood level and atrophy of thyroxin hormone from thyroid gland.
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Hypersecretion-Production of excessive thyroxin from thyroid gland. Gigantism : extra ordinary growth and height about 2. Acromegaly : Abnormal growth of hand, feet and face look ugly.]
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