Other Nerve Impulse Neuron Structure Neuroglia Organization

brain and spinal cord

Includes nerves extending from the brain & spinal cord

Sub-division of motor nervous system; involuntary control

Sub-division of the motor nervous system; voluntary control

Division of PNS carrying information from environment to CNS

Type of neuroglia in CNS that has a immune function

Type of neuroglia in PNS that forms the myelin sheath

Type of CNS neuroglia that acts as a blood-brain barrier; connects neurons to capillaries

Type of neuroglia that produce & circulate cerebrospinal fluid in the CNS

Type of neuroglia in the CNS that forms myelin sheath

long process connecting soma to terminals

Processes that gather/detect information from receptors or nearby cells

secrete neurotransmitters

Involved in saltatory conduction in myelinated axons

Location of hereditary information/instructions for building protein

moves sodium & potassium ions against their gradients

Nerve cell receives enough stimulation to generate an action potential

Occurs when Na channels close and K channels open following an action potential

Occurs when K ions try to reach their equilibrium potential

Period of time when the neuron cannot be stimulated following an action potential

type of neuron in the brain and spinal cord (functional classification)

Type of impulse conduction where the action potential “jumps” from node to node

- 70 mV; membrane is “polarized” w/ more + charges outside than inside

Sensory neuron  interneuron  motor neuron

Type of neuron with lots of dendritic processes (structural classification)