HLSC 2400U Study Guide - Comprehensive Final Exam Guide - Sodium Channel, Memory, White Matter
Document Summary
Neurons receive info, process it and genertat outpu. Organelles of a neuron include: nucleus, golgi bodies, mitochondira, lysosomes, endoplasmic reticulum. Nucleus, golgi and rough er are restricted to the soma. Two cell types: neurons, neuroglia, schwann cells, satellite cells, astrocytes, oligodendrocytes, microglial cells, ependymal cells. Neurons transmit info about their acitivty via neurotransmitters from presynaptic temrinal to the synaptic cleft (the space betwewen neurons for interneuronal communication) Mechanism fro transportig substances along an axon. Occurs in 2 directions: anterograde: from soma to presynatic terminal, retrograde: from synapse to soma. Occurs at many speeds but slow with age and in neurodegenrative diseases (parkinsons, etc. ) Organization depedns on type of neuron involved: bipolr cells (ex. Retinal bipolr cell in eye: multipolar cells (ex. Spinal motor neuron; projects from spine to innervate skeletal muscle fibers) 2 primary stucturs: dendritic root: divide into multiple dendritiv branches, axon: project from presynaptic terminals.
