Nervous System

Which function does the nervous system perform?

• Immune responses against pathogens

• Sensory input and motor output

• Transportation of nutrients

• Waste elimination

Which division of the nervous system is defined as containing the brain and spinal cord?

• Peripheral

• Autonomic

• Somatic

• Central

Which term means connective tissues that support, nourish, protect and insulate the impulse conducting cells?

• Neuroglia

• Neurons

• Gray matter

• White matter

What are the gaps between Schwann cells and their myelin sheaths called?

• Synaptic gaps

• Neurilemmas

• Synaptic vesicles

• Nodes of Ranvier

What are the impulse-conducting cells of the nervous system called?

• Neuroglia

• Neurons

• Astrocytes

• Oligodendrocytes

Which structure transmits impulses away from the neuron cell body?

• Dendrite

• Microglia

• Axon

• Sarcolemma

Which term refers to a neuron that sends an impulse toward the central nervous system?

• Effector

• Afferent

• Efferent

• Motor

Which term refers to a neuron that sends an impulse toward muscles or glands called?

• Arcing

• Sensory

• Afferent

• Efferent

Which term means bundles of nerve fibers in the central nervous system?

• Neuroglia

• Nerve

• Gyrus

• Tract

Which term refers to a neuron that is resting, without conducting an impulse?

• Polarization

• Depolarization

• All-or-none response

• Saltatory conduction