Nervous System Structure Review Question Preview (ID: 33380)
Part 1 Of Nervous System.
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the two main types of CELLS in the nervous system are
a) neurons and glial
b) sensory and motor
c) afferent and efferent
d) central and peripheral
the ORGANS of the nervous system are divided into two main groups based on location
a) central and peripheral
b) autonomic and somatic
c) sympathetic and parasympathetic
d) concentrated and diffuse
nodes of Ranvier, aka neurofibril nodes, are found (among other places)
a) between Schwann cells
b) between axons and dendrites
c) between adjacent neurons
d) only in motor neurons
damage to the occipital lobes of the brain can impair
a) seeing
b) thinking
c) remembering
d) smelling
sensory neurons enter the ____ side of the spinal cord, while motor neurons exit the ____ side of the spinal cord
a) posterior, anterior
b) ventral, dorsal
c) medial, lateral
d) left, right
a NERVE is
a) an organ with multiple tissues in it
b) found only in the CNS
c) few to many bundles of neurons
d) another name for a single neuron, either affective or effective
______ cells in the CNS perform a function equivalent to that performed by Schwann cells in the PNS
a) oligodendrocytes
b) astrocytes
c) ependymal cells
d) microglia
in myelinated neurons, depolarizations occurs mostly at the
a) nodes of ranvier
b) terminal knob
c) soma
d) dendrites
in myelinated neurons, impulses 'jump' from node to node in a process called
a) saltatory conduction
b) salutatory induction
c) salivary conflagration
d) salubrious injection
an automatic, unconscious response to a change inside or outside the body is a
a) reaction
b) reflex
c) reflection
d) rectus
a nerve is a single neuron that transmits impulses
a) FALSE
b) TRUE
c) I HAVE NO IDEA
d) I DONT CARE
when the nerve impulse reaches the synapse
a) a chemical discharge occurs
b) an electrical discharge occurs
c) the synaptic cleft narrows
d) it celebrates completing its long journey
the presynaptic neuron releases
a) neurotransmitters
b) highly charged ions
c) photons
d) receptors
infants respond more slowly to stimuli because their neurons
a) have not fully myelinated
b) have not extended fully
c) lack trans membrane ion pumps
d) lack interneuronal connections
nerve impulses traveling TOWARD the CNS are
a) said to be afferent
b) said to be efferent
c) faster than those going away
d) given priority at the plexus
____________ carry out a key part of the sensory function
a) effectors
b) affectors
c) receptors
d) transmitters
the integrative (aka associative) function takes place in the
a) central nervous system
b) fascicle
c) peripheral nervous system
d) synapse
in the nerve there are 3 membranes: from the INNERmost to the OUTERmost they are
a) endo-, peri-, and epi- neuria
b) epi-, peri-, and endo- neuria
c) peri-, epi-, and endo- neuria
d) viceral, parietal, and intermediary nerium
the cell on the presynaptic side of a synapse is always a(n)
a) neuron
b) glial cell
c) muscle fiber
d) axon
divergence in a neuronal pool is when
a) a neuron divides to form 2 new ones
b) a neuron sends axons to multiple other neurons
c) a neuron receives axons from more than one other neuron
d) changes into a glial cell
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