Integrates information from sensory and motor areas and can direct voluntary behaviors.
Directs skeletal muscle movement.
Receives sensory input and translates it into perception (awareness).
Communicates instructions from CNS that control viscera (heart and various organs) and causes involuntary subconscious actions.
Autonomic Nervous System
Consists of brain and spinal cord (one of two branches of the nervous system).
Central Nervous System
A branch of the peripheral nervous system consisting of the somatic and autonomic branches.
Consists of the sensory and motor divisions (one of the two branches of the nervous system).
Peripheral Nervous System
The branch of the PNS that controls sensory receptors.
Communicates voluntary (conscious) instructions originating in the CNS to skeletal muscles causing contractions.
Somatic Nervous System
Found throughout nervous system and brain; greatly outnumber neurons; function includes nourishing neurons and sending/receiving messages.
A cell that is specialized to conduct nerve impulses.
Neuroglia cell; provides support and holds structures together with cellular processes; aids metabolism, regulates concentration of ions, and response to brain injury.
Form inner lining of central canal that extends downward through spinal cord; form membranes that covers brain ventricles and lines ventricle cavities.
Helps support neurons and phagocytize bacterial cells and cellular debris.
Produces myelin in brain and spinal cord; can myelinate many axons.
Neuroglia cell found in the PNS that encase large axons of peripheral neurons in lipid rich sheaths; produce myelin.
Neuroglia cell in PNS that surround cell bodies of neurons and support ganglia in PNS.
A structure containing a number of nerve cell bodies, typically linked by synapses often forming a swelling on a nerve fiber.
A bundle of neurons with their connective tissue sheaths, blood vessels, and lymphatics.
Connects one part of the nervous system with another.
Control center of the cell.
A coating of myelin (in PNS).
An axon or nerve fiber that is coated with myelin.
Formed by the parts of the Schwann cell that contain most of the cytoplasm and nuclei that remain outside the myelin sheath.
An axon or nerve fiber that is not coated with myelin.
Relays information between neurons in brain and spinal cord (multipolar).
Applies to neurons located in the CNS that project their axons outside the CNS to directly or indirectly control muscles.
Neurons responsible for converting various external stimuli that arise from the environment of an organism producing a corresponding internal stimuli.
Voltage created by an ion crossing the cell membrane.
Nernst of Sodium (Na+).
Nernst for Potassium (K+).
What is required for Nernst to be reached?
A mechanism of active transport that moves potassium ions into and sodium ions out of the cell.
Neurophysiology Sections 1-10