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Unformatted text preview: THE ENDOCRINE SYSTEM Function : The endocrine system is an information signal system much like the nervous system. However, the nervous system uses nerves to conduct information, whereas the endocrine system mainly uses blood vessels as information channels. Glands located in many regions of the body release into the bloodstream specific chemical messengers called hormones The body contain two types of gland: Exocrine glands-secrete their products into ducts or directly onto epithelial surface. Examples:sweat glands, salivary glands, mammary glands, stomach, liver, pancreas. Endocrine glands -secrete their products directly into the blood Action and Source of Selected Hormone Anterior pituitary 1. Growth hormone (GH) or Somatotropin-stimulate protein synthesis, increase lipolysis and the decrease use of the glucose for ATP production, promoting hyperglycemia (diabetogenic effect)-stimulate the growth of bone,muscle and other organ by increasing protein synthesis. It resist protein breakdown during period of food deprivation and favors fat breakdown.-Considered a diabetogenic hormone. It promote insulin resistance in muscle and adipose tissue. Therefore, plasma glucose level increase with concomitant increase in insulin levels. Usually insulin promote lipogenesis. However, GH antagonist this and insulin levels....
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This note was uploaded on 02/28/2012 for the course BIO 101 taught by Professor Franklogiudice during the Spring '11 term at University of Central Florida.
- Spring '11