biol_119_lecture_15_10-7-09

biol_119_lecture_15_10-7-09 - Lecture 15, 10-07-2009 End of...

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Lecture 15, 10-07-2009 End of 45 and then onto a little of 46 .
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At a particular position along a nephron, the osmotic potential of the filtrate is 500 mosm/L while the surrounding kidney's is 600 mosm/L. Which one of the following is a likely result? A. Water will diffuse into the nephron by osmosis. B. Water will be pumped into the nephron by active transport. C. Water will diffuse out of the nephron by osmosis. D. Water will be pumped out of the nephron by active transport. E. There will be no net movement of water.
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B. Insulin and Glucagon: Control of Blood Glucose Insulin reduces blood glucose levels by -promoting the cellular uptake of glucose -slowing glycogen breakdown in the liver -promoting fat storage Glucagon increases blood glucose levels by -stimulating the conversion of glycogen to glucose in the liver -stimulating the breakdown of fat and protein into glucose
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Diabetes mellitus Diabetes mellitus, perhaps the best-known endocrine disorder is caused by a deficiency of insulin or a decreased response to insulin in target tissues is marked by elevated blood glucose levels Type I diabetes mellitus (insulin-dependent diabetes) is an autoimmune disorder in which the immune system destroys the beta cells of the pancreas Type II diabetes mellitus (non-insulin-dependent diabetes) is characterized either by a deficiency of insulin or, more commonly, by reduced responsiveness of target cells due to some change in insulin receptors
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What happens when beta cells of the pancreas release insulin into the blood? A. Blood glucose levels rise to a set point and stimulate glucagon release. B. Body cells take up more glucose . C. The liver breaks down glycogen to glucose. D. Alpha cells are stimulated to release glucose into the blood. E. Both B and D are correct.
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Concept 45.3 The endocrine and nervous systems act individually and together in regulating animal physiology
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A. Coordination of Endocrine and Nervous Systems in Invertebrates PTTH is produced by neurosecretory cells and stimulates the release of ecdysone from the prothoracic glands. Ecdysone promotes molting
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This note was uploaded on 05/04/2011 for the course BIO 119 taught by Professor O'donnellandspear during the Spring '07 term at SUNY Geneseo.

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biol_119_lecture_15_10-7-09 - Lecture 15, 10-07-2009 End of...

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