Nervous System Overview
This organ system contains the brain, spinal cord, nerves, and sense organs
What is the nervous system?
This part of the neuron receives incoming signals from other neurons.
What are dendrites?
These specialized cells support, protect, and nourish neurons.
What are neuroglia (glial cells)?
This division of the nervous system contains the brain and spinal cord.
What is the central nervous system (CNS)?
This PNS division carries sensory information into the CNS.
What is the afferent (sensory) division?
This term describes the nervous system as the body’s ultimate
What is the command center
This long nerve fiber carries impulses away from the cell body.
What is the axon?
These CNS cells act as phagocytes and remove debris and bacteria.
What are microglia?
This division connects the CNS to the rest of the body using cranial and spinal nerves.
What is the peripheral nervous system (PNS)?
This PNS division carries impulses away from the CNS to effectors.
What is the efferent (motor) division?
One of the three major aspects of the nervous system responsible for detecting stimuli
What is sensory input/receptors?
These gaps in the myelin sheath speed up nerve impulse transmission.
What are nodes of Ranvier?
These cells form the myelin sheath in the brain and spinal cord.
What are oligodendrocytes?
Which system includes both cranial and spinal nerves?
What is the peripheral nervous system?
This functional category controls voluntary skeletal muscle movement.
What is the somatic nervous system?
This nervous system function processes and interprets incoming sensory information to form decisions.
What is integration and processing?
This lipid-rich substance insulates axons and increases conduction speed.
What is myelin?
These cells help maintain the blood–brain barrier.
What are astrocytes?
The CNS is responsible for integration and processing of information—true or false?
What is true?
This system controls involuntary actions like heart rate and digestion.
What is the autonomic nervous system?
This function sends signals from the CNS to muscles or glands.
What is motor output/receptors?
The most common type of neuron found in the brain and spinal cord.
What is a multipolar neuron?
These PNS cells form myelin and aid in axon regeneration.
What are Schwann cells?
This system carries information to and from the CNS.
What is the peripheral nervous system?
Muscles and glands that respond to motor signals are called these.
What are effectors?