Exam (elaborations)
SLCC Anatomy- Nervous tissue Questions and Answers 2024
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SLCC Anatomy- Nervous tissue
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SLCC Anatomy- Nervous tissueThe nervous system consists of which two subdivisions? - answercentral and peripheral
Clusters of neuron cell bodies located outside the CNS are called - answerganglia
Which functional division of the nervous system includes the SNS and ANS? -
answermotor nervous system
Which effectors are innervated by visceral motor neurons? - answerneurons and glial
cells
In neurons, the abundant free and bound ribosomes are collectively called the ______,
also known as Nissl bodies. - answerchromatophilic substance
The slightly expanded tips of telodendria are called - answermultipolar neurons
Efferent neurons transmit nerve impulses from the CNS to - answerMuscles or glands
Collectively, all glial cells guide young migrating _____ during development. -
answerneurons
The word root glia, as in "glial cells," most nearly means - answerglue
What are the neuroglia only found of the central nervous system? - answerependymal
cells and astrocytes
The largest and most abundant of the CNS glial cells, ____________ help form the
blood-brain barrier. - answerastrocytes
Which types of glial cells are found in the peripheral nervous system? -
answerneurolemmocytes and satellite cells
What is term describes the collection of lipids and proteins that may form a protective
coating around an axon? - answermyelin
Myelination affects nerve impulse conduction in which way? - answerallows saltatory
conduction from one neurofibril node to the next
Axon regeneration in the PNS involves ____________ in a process known as Wallerian
degeneration. - answerneurolemmocytes
, Nerves are bundles of parallel axons in the PNS that have three successive connective
tissue wrappings, called the - answerendoneurium, perineurium, and epineurium
The point at which two excitable cells contact to exchange information is called a -
answersynapse
At a chemical synapse, the presynaptic membrane releases a signaling molecule called
a - answerneurotransmitter
The rate of conduction of a nerve impulse is influenced by the diameter of the ___ and
presence or absence of a - answeraxon; myelin sheath
What accounts for the gray color of gray matter? - answerpresence of Nissl bodies and
the absence of myelin
Bundles of neurofilaments extending into dendrites and axons to provide structural
support are called - answerneurofibrils
The phrase "terminally differentiated," as applied to mature neurons, means that they
cannot - answerdivide mitotically to produce daughter cells
Although they outnumber ______ by as much as ten to one, _____ account for only
about half of the total volume of the nervous system. - answerneurons; glial cells
The ____ in the CNS and _____ in the PNS perform similar functions, although their
methods are different. - answeroligodendrocytes; neurolemmocytes
Which glial cells wander through the CNS and replicate in response to an infection,
much like leukocytes? - answermicroglia
Although classified as glial cells, ______ are also ____ that line the cavities in the brain
and spinal cord and help form the choroid plexus. - answerependymal cells; epithelial
cells
In the PNS, an axon may be enveloped by ______ without being ______. -
answerneurolemmocytes; myelinated
Which glial cells participate in the repair of damaged nerves? - answerneurolemmocytes
Which nervous system divisions or components contain no afferent neurons? -
answerANS and SNS of the motor nervous system
Ironically, a _____ neuron typically has more dendrites than a _____ neuron. -
answerunipolar; bipolar
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