M3Neurons

M3Neurons - MODULE 3 NEURAL AND HORMONAL SYSTEMS BRIEF...

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MODULE 3: NEURAL AND HORMONAL SYSTEMS BRIEF HISTORY I. Plato—mind in brain II. Aristotle—mind in heart III. Phrenology—pseudoscience invented by Gall a. Specific areas of brain associated with particular functions b. Feel bumps and grooves on head to determine how well developed a particular function was IV. Gall was largely wrong, but particular brain regions do have identifiable functions NEURAL COMMUNICATION I. Neurons a. Basic cell of the nervous system—communicate with other neurons, sensory organs, muscles and glands b. Basic structure of a neuron i. Cell body ii. Dendrites iii. Axon iv. Myelin sheath v. Terminal branches (buttons) c. Major processes or functions of neurons i. Resting potential—a “prerecorded message” ii. Action potential or neural impulse—the neuron’s “message” travels from cell body to axon terminals iii. Synaptic transmission—sending the “message” to other neurons, glands or muscles d. Resting potential of neurons i. Resting potential allows neuron to store energy and therefore
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M3Neurons - MODULE 3 NEURAL AND HORMONAL SYSTEMS BRIEF...

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