HOW ORGAN SYSTEMS COMMUNICATE

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Think of a sports team playing a big name What does the team have to do to win?

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How Organ Systems communicate Lic. Isabel Janeth Del Rosario López Mejía. The Nervous System

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Outcome: How Organ Systems communicate By the end of the lesson you will be able to: Explain how the nervous and endocrine systems help maintain homeostasis. Contrast the nervous and endocrine systems’ methods of communication.

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Open your books on pages 874 and 875. We will use it to respond the worksheet. Work in pairs to help each other.

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KEY CONCEPT The nervous system and the endocrine system provide the means by which organ systems communicate.

The body’s communication systems help maintain homeostasis.:

The body’s communication systems help maintain homeostasis. A stimulus causes a response. Responses can be chemical, cellular, or behavioral. The nervous and endocrine systems respond to stimuli.

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What is a stimulus in biology? any external change in the environment that can be detected by an organism.   The ability to respond to a stimulus is called irritability and is a necessary condition for life. An example of a stimulus is an individual placing a hand on a hot surface. The temperature is the stimulus, and the individual then protects themselves by pulling their hand away.

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Analyze the pictures and explain them. This is another example. All organisms must maintain homeostasis, a stable internal environment. Homeostasis can only be achieved through sensing and responding to the environment.

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The nervous system controls thoughts, movement, and emotion. The endocrine system controls growth, development, and digestion. Differences between NS and ES

The nervous and endocrine systems have different methods and rates of communication.:

The nervous and endocrine systems have different methods and rates of communication. The nervous system works quickly , using chemical and electrical signals. spinal chord nerves interconnected network of cells signals move through cells divided into central nervous system (CNS) and peripheral nervous system (PNS)

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The endocrine system works more slowly. only chemical signals signals move through bloodstream physically unconnected organs receptor target cell not a target cell bloodstream hormone

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Vocabulary Remember: Central located at the center. Peripheral located along the edges

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HOMEWORK Research Information Do not forget to study the worksheets for Monthly Exam . You can find the information in your book on pages 874-875. Study these pages from your book. Some questions will come in the different evaluations .

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