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Physiology final
Term 2 review
Term | Definition |
---|---|
central nervous system | contains the brain and spinal cord |
peripheral nervous system | contains nerve tissue that lie in the outer region |
somatic nervous system | regulates the somatic effectors |
autonomic nervous system | carry information to the visceral effectors or smooth muscles |
enteric nervous system | intestinal system, has a network of integrators and feedback loops that act independently |
neurons | excitable cells that conduct impulses |
two types of cells in the nervous system | glia, neurons |
5 types of glia | astrocytes, microglia, ependymal, oligodendrocytes, Schwann cells |
myelin sheath | layers of Schwann cells that contain white, fatty substance myelin |
blood-brain barrier | maintains stability of the brain for normal function |
number of neurons in the brain | over 100 billion |
neurons consists of | cell body, axon, and dendrites |