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Tne Nervous System 



A. Introduction 



1. Definition 



2. Structural and functional features 



a. The morphological and functional unit of the nervous system 



b. The reflex arc 



c. Structural divisions of the vertebrate nervous system 



d. The supporting tissue 



B. Basic developmental features 



1. The embryonic origin of nervous tissues 



2. The structural fundaments of the nervous system 



a. The elongated hollow tube 



b. The neural crest cells 



c. Special sense placodes 



3. The histogenesis of nervous tissue 



a. The formation of neurons 



1) General cytoplasmic changes 



2) Nuclear changes 



3) Growth and development of nerve-cell processes 



b. The development of the supporting tissue of the neural tube 



c. Early histogenesis of the neural tube 



d. Early histogenesis of the peripheral nervous system 



C. Morphogenesis of the central nervous system 



1. Development of the spinal cord 



a. Internal changes in the cord 



b. Enlargements of the spinal cord 



c. Enveloping membranes of the cord 



2. Development of the brain 



a. The development of specialized areas and outgrowths of the brain 



1 ) The formation of the five-part brain 



2) The cavities of the primitive five-part brain and spinal cord 



b. The formation of cervical and pontine flexures 



c. Later development of the five-part brain 



D. Development of the peripheral nervous system 



1. Structural divisions of the peripheral nervous system 



2. The cerebrospinal system 



3. General structure and function of the spinal nerves 



4. The origin, development and functions of the cranial nerves 

 O. Terminal 



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