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[blank_start]central nervous system[blank_end]: consists of the brain and spinal cord
[blank_start]peripheral nervous system[blank_end]: composed of nerves arising from the brain and spinal cord
[blank_start]afferent division[blank_end]: PNS subdivision that transmits incoming information from the sensory organs to the CNS
[blank_start]sympathetic division[blank_end]: produces the "fight or flight" response
[blank_start]somatic nervous system[blank_end]: subdivision that carries information from the CNS to skeletal muscle
[blank_start]autonomic nervous system[blank_end]: subdivision of efferent division that transmits information to smooth muscle, cardiac muscle and glands
[blank_start]efferent nervous system[blank_end]: consists of all outgoing motor pathways
[blank_start]parasympathetic division[blank_end]: coordinates the body's normal resting activities
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astrocyte: [blank_start]helps form the blood-brain barrier[blank_end], [blank_start]largest/most numerous neuroglial cells[blank_end], [blank_start]"star cell"[blank_end]
microglia: [blank_start]ability of phagocytosis[blank_end]
oligodendrocyte: [blank_start]produces myelin sheath in the CNS[blank_end], [blank_start]associated with MS[blank_end]
Schwann cell: [blank_start]produces myelin sheath in the PNS[blank_end], [blank_start]neuroglia that forms the neurilemma[blank_end]
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helps form the blood-brain barrier
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largest/most numerous neuroglial cells
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"star cell"
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ability of phagocytosis
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produces myelin sheath in the CNS
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associated with MS
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produces myelin sheath in the PNS
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neuroglia that forms the neurilemma
Frage 3
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Which of the following is/are classified as nerve fibers?
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axon
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dendrites
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none of the above
Frage 4
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Which of the following conduct impulses toward the cell body?
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axons
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dendrites
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Nissl bodies
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none of the above
Frage 5
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A neuron with one axon and several dendrites is a
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multipolar neuron
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unipolar neuron
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bipolar neuron
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none of the above
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Which type of neuron lies entirely within the CNS?
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afferent
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efferent
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inerneuron
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none of the above
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Which sequence best represents the course of an impulse over a reflex arc?
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receptor, synapse, sensory neuron, motor neuron, effector
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effector, sensory neuron, synapse,motor neuron, receptor
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receptor, motor neuron, synapse, sensory neuron, effector,
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receptor, sensory neuron, interneuron, motor neuron, effector
Frage 8
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A complete nerve, consisting of numerous fascicles and their blood supply, is held together by a fibrous coat called the
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endoneurium
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perineurium
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epineurium
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fascicles
Frage 9
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Small, distinct regions of gray matter within the CNS are usually called
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white matter
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nuclei
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ganglia
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fascicles
Frage 10
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Nerves that contain mostly efferent fibers are called
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sensory nerves
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motor nerves
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mixed nerves
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Schwann nerves
Frage 11
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Gray matter in the CNS consists of
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nerve fibers
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neuroglia
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axons
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cell bodies
Frage 12
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Most nerves in the human nervous system are
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sensory nerves
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motor nerves
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mixed nerves
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reflex nerves
Frage 13
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Evidence now indicates that neurons may be replaced
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Regeneration of nerve fibers will occur if the cell body is intact and the fibers have a neurilemma.
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There are no differences between the CNS and PNS concerning the repair of damaged fibers.
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The somatic motor division carries information to the [blank_start]skeletal[blank_end] muscles.
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Incoming sensory pathways are [blank_start]afferent[blank_end].
Frage 18
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The [blank_start]parasympathetic[blank_end] division coordinates the body's normal resting activities and is sometimes referred to as the "rest and repair" division.
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parasympathetic
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sympathetic
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The myelin sheath is produced by [blank_start]oligodendrocytes[blank_end] in the CNS.
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oligodendrocytes
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ependymal
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The [blank_start]Schwann cells[blank_end] are found only in peripheral neurons.
Frage 21
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Myelin sheath gaps are often called [blank_start]nodes of Ranvier[blank_end].
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nodes of Ranvier
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neurilemma
Frage 22
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Energy for the neuron is provided by [blank_start]mitochondria[blank_end].
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mitochondria
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Golgi apparatus
Frage 23
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Myelinated fibers are [blank_start]white[blank_end].
Frage 24
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[blank_start]Interneurons[blank_end] lie entirely within the central nervous system.
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Interneurons
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efferent neurons
Frage 25
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All electrical signals that start in receptors [blank_start]do not[blank_end] invariable travel over a complete reflex arc and terminate in effectors.
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Neurons: [blank_start]axon,[blank_end] [blank_start]sensory[blank_end], [blank_start]conduct impulses[blank_end], [blank_start]efferent[blank_end], [blank_start]multipola[blank_end]r
Neuroglia: [blank_start]supporting cells[blank_end], [blank_start]astrocytes[blank_end], [blank_start]forms myelin sheath[blank_end], [blank_start]phagocytosis[blank_end], [blank_start]multiple sclerosis[blank_end]
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axon,
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sensory
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conduct impulses
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efferent
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multipola
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supporting cells
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astrocytes
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forms myelin sheath
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phagocytosis
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multiple sclerosis