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BIOM 3200 Study Guide - Homeostasis, Ghrelin, Hyperglycemia

105 views27 pages
ochreherring44
2 Mar 2012
School
University of Guelph
Department
Biomedical Sciences
Course
BIOM 3200
Professor
Neil Mac Lusky

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Document Summary

The study of structure and function of the endocrine tissues. The study of hormones and the action of hormones. The word endocrine is derived from the greek endon (within) plus krinein (to secrete). A term coined in the early 20th century by the american physiologist, walter cannon. The relative constancy of the chemical composition of the blood, despite considerable. Homeo = unchanging, stasis ,= static, although both are untrue in this case. variations in external conditions. The lungs, kidneys, digestive tract, and cardiovascular system are all examples of the organs/systems that are essential for maintaining homeostasis (they allow for influx of o2, nutrients etc, and efflux of toxins such as urea, co2 etc. Claude bernard proposed that internal environments are separated from the external by some form of an integument (skin, mucous membranes etc) that limits the transfer of biological materials between the two milieus, providing a defense against infectious agents.

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Related Questions

1.Define hormone & endocrine system.
2.Explain the roles of hormones in homeostasis.
3.Describe the structures & explain the functions of theendocrine organs.
4.Identify the chemical classes of the various hormones
5.Describe hormone synthesis, transport, & interactions.
6.Explain how hormones affect changes in the physiologicalactivities of target cells.
7.Explain how the endocrine & SNS sympathy nervous system helpthe body to cope with stress.
Discuss the function of the endocrine system in maintaining homeostasis.

The maintenance of homeostasis is of major importance to all organ systems in the body and the overall survival of the individual. Explain how homeostasis is the maintenance of a dynamic range of environmental qualities rather than holding the internal environment at a set point. What would be wrong with a set point (say for body temperature) rather than a working range of temperatures?

The endocrine system is closely tied to homeostasis functioning. Give two examples of hormones (including their glands of origin and action) that play major roles in homeostatic processes in the body. What happens if these hormones are disrupted in their actions?

Also, look at how we adapt to survival in the outside world. Discuss how maintaining homeostasis gives us greater freedom of activity from dependence upon changes in the external environment. What happens during extremes that force our bodies out of homeostatic bounds? Give specific examples.

Why is the maintenance of homeostasis especially important during development of new humans within the bodies of their mothers? What can go wrong if specific homeostatic functions are disrupted?