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Chemical Signals in Animals - Introduction to Biology - Lecture Slides, Slides of Biology

Dr. Bhim Rao Ambedkar University Biology

These are the lecture slides of Introduction to Biology. Key important points are: Chemical Signals in Animals, Specific Target Cells, Chemical Signals, Endocrine System, Hormone-Secreting Cells, Energy Metabolism, Growth and Development, Glucagon from Pancreas, Tropic Hormones

Typology: Slides

2012/2013

Uploaded on 01/18/2013

saandeep 🇮🇳

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Download Chemical Signals in Animals - Introduction to Biology - Lecture Slides and more Slides Biology in PDF only on Docsity! Chapter 45 Chemical Signals in Animals Docsity.com • Hormones are chemical signals. • The endocrine system consists of: •Endocrine cells which are hormone-secreting cells and •Endocrine glands which are hormone- secreting organs. • Specific target cells respond to specific hormones. Docsity.com Tropic hormones- stimulate the production and secretion of hormones by other endocrine glands; ex. TSH Nontropic hormones- stimulates cellular growth, metabolism, or other functions; ex. thyroxine Docsity.com Invertebrate nervous systems clearly illustrate endocrine and nervous system interactions • Invertebrates have a wide variety of hormones that are involved in the regulation of homeostasis. Docsity.com • An example from hydra: •One hormone stimulate asexual reproduction. •Another hormone prevents sexual reproduction. • An example from a mollusk: •The hormone that regulates egg laying also inhibits feeding and locomotion. Docsity.com

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