Chapter 7: The Nervous System Flashcards
what are the three major functions of the nervous system?
sensory input, integration, motor output
what are the two major parts of the central nervous system (CNS)
brain and spinal cord
what makes up the peripheral nervous system?
nerves outside of the brain and spinal cord
what are sensory (afferent) divisions?
nerve fibers that carry information to the CNS
what are motor (efferent) divisions?
nerve fibers that carry information away from the CNS
what is another name for the nervous tissue support cells?
astrocytes
what is the function of astrocyte cells?
form barriers between capillaries and neurons and make exchanges between the two
what is the function of microglia cells?
dispose of debris such as dead cells and bacteria
what is the function of ependymal cells?
likes cavities of the brain and spinal cord
what is the function of oligodendrocyte cells?
produce myelin sheath around nerve fibers
what is the function of satellite cells?
protect neuron cell bodies
what is the function of schwann cells?
form myelin sheath in the peripheral nervous system
what is unique about the neuroglia cells?
they do not lose their ability to divide
what is another name for a neuron?
nerve cell
what is the major function of a neuron?
transmit messages
