Animal Form and Function

Animal Form and Function - AnimalFormandFunctionChapter28...

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Animal Form and Function- Chapter 28 Nervous System Effector cells  muscle or gland cells Nerves- bundles of neurons wrapped in connective tissue Central nervous system (CNS)- brain and spinal cord Peripheral nervous system (PNS)- sensory and motor neurons Structural unit of Nervous system Neuron-  structural and functional unit of nervous system Cell boy-  nucleus and organelles Axon hillock-  connects nucleus to axon Dendrites-  impulses from tips to neuron Axons-  impulses go away opposite end of dendrites Myelin Sheath-  supporting, insulin layer Schwann cells PNS support cells Synaptic terminals Neurotransmitter releaser Synapse Neuron junction Simple Nerve Circuit Sensory neuron Convey information to spinal cord Interneuron: Information integration
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Motor neurons Convey signals to effector cell  Reflex Simple response Sensory to motor neurons Ganglion (ganglia) Cluster of nerve cell bodies in the PNS Supporting Cells/ glia Non conducting cell that provides support Insulation and protection Astrocytes Support Protection in the CNS Oligodendrocytes Cells that form the myelin sheath in the CNS Schwann cells Cells that form the myelin sheath in the PNS Radial Glia In developing embryos Stem cells Cures Parkinson’s The Resting Potential -60 to -80mV
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This note was uploaded on 10/31/2011 for the course BIO 102 taught by Professor Robinson during the Spring '09 term at UPenn.

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Animal Form and Function - AnimalFormandFunctionChapter28...

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