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The PNS gathers all outside and foreign information and directs it to the CNS.
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∙ 12y ago
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What is the name for bundles of myelinated axons in the PNS?
nerves
Why are some nerves called afferent nerves and others are called efferent nerves- how do they differ in function?
Afferent nerves are those that send impulses from the PNS to the CNS. Efferent nerves send impulses from the CNS to the PNS. So the first goes toward the Central Nervous System and the second goes away from it.
List the structures of the CNS and PNS?
Peripheral Nervous System (PNS)Contains all nerves outside of the brain & spinal cord.Somatic Nervous System (Voluntary)Two types: Sensory (or afferent) and motor (or efferent) nerves
Collections of neuron cell bodies associated with nerves in the PNS?
Ganglia
Are collections of neuron cell bodies associated with nerves in the PNS?
Ganglia
An impulse reaches the CNS from the PNS via the?
Afferent nerves
Is the majority of the nervous system contained in the CNS or the PNS?
the PNS as the cental nervous system only consists of the brain and spinal cord. where as the rest of the body is covered by all the nerves which are included in the PNS
How many pairs are of the cranial nerves?
There are 12 pairs of cranial nerves that are part of the PNS. These nerves are sensory, mixed and mostly motor.
What nerves are included in the peripheral nervous system?
PNS includes all nerves throughout the body, except the brain and spinal cord.
What is the PNS made up of?
it is made up by nerves and associated cells that are not part of the brain and the spinal cord, included here are cranial nerves that pass through openings in the skull and stimulate regions of the head and neck, spinal nerves, and ganglia(ganglia are collections of nerve cell bodies).
What are Bundles of axons are called?
NERVES
Are nerves more myelinated or unmyelinated in the CNS?
Nope. They can be found in the PNS as well. The myelinated ones in the CNS are made my Schwann cells. And the ones made in the PNS are made by oligodendrocytes.
