Pregunta 1
Pregunta
[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
Pregunta 2
Pregunta
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]
Respuesta
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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
Pregunta 3
Pregunta
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
Pregunta 4
Pregunta
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
Pregunta 5
Pregunta
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
Pregunta 6
Pregunta
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
Pregunta 7
Pregunta
Which sequence best represents the course of an impulse over a reflex arc?
Respuesta
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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
Pregunta 8
Pregunta
A complete nerve, consisting of numerous fascicles and their blood supply, is held together by a fibrous coat called the
Respuesta
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endoneurium
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perineurium
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epineurium
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fascicles
Pregunta 9
Pregunta
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
Pregunta 10
Pregunta
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
Pregunta 11
Pregunta
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
Pregunta 12
Pregunta
Most nerves in the human nervous system are
Respuesta
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sensory nerves
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motor nerves
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mixed nerves
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reflex nerves
Pregunta 13
Pregunta
Evidence now indicates that neurons may be replaced
Pregunta 14
Pregunta
Regeneration of nerve fibers will occur if the cell body is intact and the fibers have a neurilemma.
Pregunta 15
Pregunta
There are no differences between the CNS and PNS concerning the repair of damaged fibers.
Pregunta 16
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The somatic motor division carries information to the [blank_start]skeletal[blank_end] muscles.
Pregunta 17
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Incoming sensory pathways are [blank_start]afferent[blank_end].
Pregunta 18
Pregunta
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.
Respuesta
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parasympathetic
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sympathetic
Pregunta 19
Pregunta
The myelin sheath is produced by [blank_start]oligodendrocytes[blank_end] in the CNS.
Respuesta
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oligodendrocytes
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ependymal
Pregunta 20
Pregunta
The [blank_start]Schwann cells[blank_end] are found only in peripheral neurons.
Pregunta 21
Pregunta
Myelin sheath gaps are often called [blank_start]nodes of Ranvier[blank_end].
Respuesta
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nodes of Ranvier
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neurilemma
Pregunta 22
Pregunta
Energy for the neuron is provided by [blank_start]mitochondria[blank_end].
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mitochondria
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Golgi apparatus
Pregunta 23
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Myelinated fibers are [blank_start]white[blank_end].
Pregunta 24
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[blank_start]Interneurons[blank_end] lie entirely within the central nervous system.
Respuesta
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Interneurons
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efferent neurons
Pregunta 25
Pregunta
All electrical signals that start in receptors [blank_start]do not[blank_end] invariable travel over a complete reflex arc and terminate in effectors.
Pregunta 26
Pregunta
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]
Respuesta
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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