ZOO 3000 Lecture Notes - Lecture 10: Phagocytosis, Microtubule, Endorphins

• School: University of Guelph
• Department: Zoology
• Course: ZOO 3000
• Professor: Fred Laberge

Document Summary

Origin of nervous tissue from epithelium: 1-epithelial electrical conduction to epitheliomuscular cell (through jap junctions, 2-senosry cell to em cell (synapse, 3-inter-neuron (++ synapses, 4-true interneuron, motorneuron and muscle cell. Structural: central nervous system brain and spinal cord, peripheral nervous system peripheral nerves, ganglia. Functional: somatic sensory and motor innervation under voluntary control (except reflex arcs, autonomic involuntary motor control (innervation of viscera, smooth muscles, glands (sensory afferents from viscera)) Functions performed by neurons are cells that are specialized for excitability, conductivity, communication. There are several types of neurons and connective/supportive cells in nervous tissue. Structural and functional unit of the nervous system: cell structure dendrite, cell body and axon, perikaryon=soma=cell body, nucleus central spherical with prominent nucleolus. The nerve cell body, dendrites and proximal part of the axon are within the. In the cns the myelin for the axon is produced by oligodendrocyte: while in the pns myelin is produced by.