BIOL 3446 Lecture Notes - Lecture 4: Neuroglia, Grey Matter, Spinal Canal
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Document Summary
Anatomical and functional divisions of the nervous system. The nervous system responsible for communication between cells in multicellular organisms: control and adjust the activity of the body, provides swift but brief responses (the endocrine system is more long term) Functions of the nervous system: processes and coordinates all information, gives motor commands that control the activities of peripheral organs (skeletal muscles receives major sensory data from inside and outside the body and also secretory glands) 2 kind of cell neurons and glial cells: neurons cells that send and receive signals, glial cells support and protect neurons. The neural tissue is organized into the brain and spinal cord, nerves, ganglia and plexuses, and special sensory organs (retina, olfactory receptors) Anatomical divisions of the nervous system: central nervous system contains the brain and spinal cord, peripheral nervous system everything outside of bony coverings of skull and spine (cranial nerves, spinal nerves, local plexuses and enteric plexus, sensory organs (eyes, ears))
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