Week_2_Lecture_4_Cell_structure_ACE

Week_2_Lecture_4_Cell_structure_ACE - Lecture 3: Cell...

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Lecture 3: Cell Structure
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Outline Cell Structure Nervous System Cells of the Brain Neurons Supporting Cells The Blood-Brain Barrier Withdrawal Reflex
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Nervous System Central Nervous System (CNS) Comprised of the brain and spinal cord Encased within the skull and spinal column Peripheral Nervous System (PNS) Comprised of nerve tissue located outside of the brain and spinal cord
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Neurons – basic structure soma (cell body) produces neurotransmitters dendrites receive input from other cells axon transmits electrical signal neurons communicate via synapses
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Types of neurons Sensory neuron: detects changes in the external or internal environment and sends information about these changes to the central nervous system Motor neuron: located within the central nervous system; controls the contraction of a muscle or the secretion of a gland Interneuron: located entirely within the central nervous system Form circuits with other neurons (relay information)
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Classification of Neurons - shape
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neuron found in sensory system Only 1 axon and 1
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Week_2_Lecture_4_Cell_structure_ACE - Lecture 3: Cell...

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