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Unformatted text preview: The Brain: Module 4 • Overview o Neural Communication Neurons How neurons transmit information In fluence of neurotransmitters o Nervous System Central Nervous System (CNS) Peripheral Nervous System (PNS) o Endocrine System Hormones In fluence of hormones o Basic brain structures o How we study the brain • Neurons o Neurons are the basic building blocks of the brain. The brain is made up of billions of neurons. o Animals and humans have similar brain function and anatomy. But humans have the largest brains, relative to body size. • Neuronal Structure o Main parts: Dendrites Body Axon Myelin • The Action Potential o A neural impulse. A brief electrical charge that travels down an axon and is generated by the movement of positively charged atoms in and out of channels in the axon’s membrane • I nhibition/Excitation o Neurons have a threshold of excitation. That is the minimum change in membrane potential needed to start an action potential....
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This note was uploaded on 09/09/2011 for the course PSYC 2000 taught by Professor Munson during the Fall '10 term at LSU.
- Fall '10
- Endocrine System