Notes_for_Posting_Chapter_45_part_1 - Hormones and the...

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1 Hormones and the Endocrine System ? How does a caterpillar turn into a butterfly? Key Concepts for Today What is a hormone and how do the endocrine and nervous systems overlap? How do hormones actually cause a response at the effector cell? What is the role of the pituitary gland and hypothalamus in the vertebrate endocrine system? Non-pituitary hormones and what they do. What is a hormone? A hormone is a molecule that is produced in one part of the body but which acts on a target tissue in another part of the body. The endocrine system is comprised of all the hormone secreting cells in the body. The endocrine system can be thought of as one of the internal communication systems in the body. The other internal communication system is the nervous system. The Internal Communication Systems of the Body The endocrine system and the nervous system are cooperative systems. In general , the nervous system can be thought of as facilitating quick responses to external stimuli while the endocrine system
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This note was uploaded on 04/06/2008 for the course BIO 20b taught by Professor Dunkin&parker during the Winter '08 term at University of California, Santa Cruz.

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Notes_for_Posting_Chapter_45_part_1 - Hormones and the...

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