PSYC 101 Chapter 2 PowerPoints

PSYC 101 Chapter 2 PowerPoints - The Biological Perspective...

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The Biological Perspective Chapter 2
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Chapter 2 Learning Objective Menu LO 2.1 What are the nervous system, neurons and nerves LO 2.2 How neurons use neurotransmitters to communicate LO 2.3 How brain and spinal cord interact LO 2.4 Somatic and autonomic nervous systems LO 2.5 Study of the brain and how it works LO 2.6 Structures and functions of the bottom part of the brain LO 2.7 Structures that control emotion, learning, memory, motivation LO 2.8 Parts of cortex controlling senses and movement LO 2.9 Parts of cortex responsible for higher forms of thought LO 2.10 Differences between left side and right side of the brain LO 2.11 How hormones interact with nervous system and affect behavior
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Overview of Nervous System Nervous System - an extensive network of specialized cells that carry information to and from all parts of the body. Neuroscience – deals with the structure and function of neurons, nerves, and nervous tissue. Relationship to behavior and learning. LO 2.1 What are the nervous system, neurons and nerves Menu
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Menu LO 2.1 What are the nervous system, neurons and nerves
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Structure of the Neuron Neurons - the basic cell that makes up the nervous system and which receives and sends messages within that system. Parts of a Neuron Dendrites - branch-like structures that receive messages from other neurons. Soma - the cell body of the neuron, responsible for maintaining the life of the cell. Axon - long tube-like structure that carries the neural message to other cells. LO 2.1 What are the nervous system, neurons and nerves Menu
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Menu LO 2.1 What are the nervous system, neurons and nerves
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Other Types of Brain Cells Glial cells - grey fatty cells that: provide support for the neurons to grow on and around, deliver nutrients to neurons, produce myelin to coat axons, Myelin - fatty substances produced by certain glial cells that coat the axons of neurons to insulate, protect, and speed up the neural impulse. clean up waste products and dead neurons. LO 2.1 What are the nervous system, neurons and nerves Menu
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Neurons in the Body Nerves – bundles of axons in the body that travel together through the body. Neurilemma – Schwann’s membrane. Tunnel through which damaged nerve fibers can repair themselves. LO 2.1 What are the nervous system, neurons and nerves Menu
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Generating the Message: Neural Impulse Ions – charged particles. Inside neuron – negatively charged. Outside neuron – positively charged. Resting potential - the state of the neuron when not firing a neural impulse. Action potential - the release of the neural impulse consisting of a reversal of the electrical charge within the axon. Allows positive sodium ions to enter the cell.
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PSYC 101 Chapter 2 PowerPoints - The Biological Perspective...

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