The chemical messengers produced by the endocrine glands are known as - removed (has
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Cortisol,Involved in "fight or flight" response, regulates metabolism and immune responses. Blood glucose is regulated by a negative feedback loop between insulin and glucagon, two opposing hormones made by the endocrine system. The endocrine system is regulated by negative feedback mechanisms that work to maintain homeostasis. The concentration of hormones, and how they effect other body systems, are controlled in this manner. For example, blood glucose regulation is controlled by insulin and glucagon , hormones produced by the pancreas. When blood glucose increases, the pancreas releases insulin, which stimulates the uptake of glucose from the blood. This prevents blood glucose from getting too high. When blood glucose concentration drops, the pancreas releases glucagon, which stimulates the breakdown of glycogen and releases glucose into the blood. the chemical messengers produced by the endocrine glands are known as
The chemical messengers produced by the endocrine glands are known as Video
CHEMICAL MESSENGERS ( ENDOCRINE SYSTEM)Grade 12 Zoology Note
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 roaring essay 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.
The hypothalamus and pituitary gland are neuroendocrine organs.
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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 derivatives, peptides, and proteins. The glands that secrete hormones comprise the endocrine signaling system.
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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. Hypersecretion-Production of excessive thyroxin from ylands gland. Gigantism : extra ordinary growth and height about 2. Acromegaly : Abnormal growth of hand, feet and face look ugly. It is also called birth hormone and milk ejection hormone. It affects the contraction uterine wall to give birth of baby and ejection of milk in mammary gland in female.
Balance amount of the water in the body from distal convoluted tubule and collecting duct of nephrone. Hyposecretion — Production of large volume of urine diurersis and diabetes insipidus. It is located on either side of trachea behind the thyroid cartilage. It has two right and left lobes. It is the largest endocrine gland. Size is 5x3cm and producee is about 40gm. It as numbers of follicle made up of cubodial cells which secret hormones. Thyroid gland is larger in the female than male.]
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