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TOPIC: Endocrine System Aim: Explain the function and makeup of the endocrine system. Do Now: Practice Questions HW: Ditto – Nervous System Review (last page of NS packet) http://www.youtube.com/watch?v=vGxho71tScM A B C Review: Put the following structures in order starting with where the impulse begins and where it ends. Motor neurons Receptors Interneurons Effectors Sensory Neurons Function of • Regulate all body the Endocrine processes System • Release hormones (chemicals) into the BLOOD –Affect activities of other cells Endocrine • Release hormones glands What is a • Chemicals that affect hormone? activities of other cells (TARGET CELLS) What is • Cells hormones travel to a target • Have receptors for specific hormones cell? • No receptor no effect Let’s summarize: 1. What is the name of the chemical secreted by endocrine glands? 2. What are the cells that are affected by hormones called? 3. What do hormones attach to on the surface of the cell? 4. How much of a hormone is needed? http://www.brainpop.com/health/bodysystem s/nervoussystem/ http://www.brainpop.com/health/bodysystem s/neurons/ http://www.brainpop.com/health/bodysystem s/brain/ DID YOU KNOW? There are approximately 100 billion neurons in the human brain. The average brain weighs about 3 pounds. DID YOU KNOW? There are about 3 million miles of axons in the human brain. The human brain has 100 trillion synaptic connections.