CNS and PNS QUESTIONS AND ANSWERS
Neurons Correct Answer: Main function cell of nervous system. Cells that send and receive signals.
Neuroglia Correct Answer: Cells that support and protect neurons.
The brain and spinal cord is located where? Correct Answer: The central nervous system.
...
Neurons Correct Answer: Main function cell of nervous system. Cells that send
and receive signals.
Neuroglia Correct Answer: Cells that support and protect neurons.
The brain and spinal cord is located where? Correct Answer: The central nervous
system.
The peripheral Nervous system consist of? Correct Answer: all neural tissue
outside CNS
Cranial Nerves connect to what? Correct Answer: The brain
Spinal nerves attach to what? Correct Answer: The spinal cord
Afferent division Correct Answer: Carries sensory information, from PNS to CNS
(incoming)
Efferent division Correct Answer: Carries motor command, from CNS to PNS
(outgoing)
what is Neural tissue? Correct Answer: tissue that composes the nervous system
What does neural tissue include? Correct Answer: neuron and neuroglia
what are the two different types of nervous cells? Correct Answer: Neuron and
Nueroglia
What are the function of Neuron and Neuroglia cells? Correct Answer: Neuron-
sends and receives signal, Neuroglia-supports and protect neurons
How is the nervous system divided? Correct Answer: Central Nervous System and
Peripheral Nervous System
Afferent Correct Answer: Carries sensory information, From PNS sensory
receptors to CNS
, Efferent Correct Answer: Carries motor commands, From CNS to PNS muscles
and glands
Somatic Nervous System Correct Answer: Controls skeletal muscles
Visceral Nervous System Correct Answer: Controls smooth muscle, cardiac
muscle and glands "unconscious control"
Parasympathetic Nervous System Correct Answer: Decrease heart rate "rest and
digest"
Sympathetic Nervous System Correct Answer: Increase heart rate "fight or flight"
What is a neuron? Correct Answer: Cells that send and receive signals
Cell body Correct Answer: aka "soma" contains nucleus
Perikyon Correct Answer: In cytoplasm
Neurofibirls Correct Answer: help support organelles in the cell body
Centrioles Correct Answer: involved with mitotis and are not present in the cell
body, the cell cannot divide and replicate
Dendrites Correct Answer: increase surface area for interactions
Axon Correct Answer: Carries action potential(electrical impulse or information)
Synaptic terminal Correct Answer: aka "synaptic end bulb"
Synapse Correct Answer: space between neuron and another cell
Nissl bodies Correct Answer: densley packed ribosomes; cause gray color called
gray matter
Neurotransmitter Correct Answer: chemical released from synpatic terminal that
communicates with another cell; usually bundled in vesicles
Presynaptic Cell Correct Answer: almost always a neuron
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