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Week 7

Nervous system cells

QuestionAnswer
Most unipolar neurons are usually: sensory neurons
A neuron that has only one axon but several dendrites is classified as a _____ neuron. Multipolar
One of the components of the blood-brain barrier is: Astrocytes.
The white matter of the nervous system is made up of: myelinated fibers
Gray matter in the brain and spinal cord consists primarily of: cell bodies.
Along a neuron, the correct pathway for impulse conduction is: dendrite, cell body, and axon.
Dendrites conduct impulses _____ cell bodies. toward
Which of the following is the deepest connective tissue layer of a nerve? Endoneurium
Regeneration of nerve fibers will take place only if the cell body is intact and the fibers have: a neurilemma.
The nervous system can be divided: according to its structure, according to direction of information flow, and by control of effectors.
Interneurons reside in the: CNS only.
Which of the following is not a function of the central nervous system (CNS)? Integrating sensory information, Evaluating the information, and Initiating an outgoing response
Nerves that contain mostly afferent fibers are called _____ nerves. Sensory
The autonomic nervous system does not stimulate: skeletal muscles
Which of the following compounds cannot cross the blood-brain barrier? Dopamine
Astrocytes attach to: Neurons and blood vessels.
The part of the nervous system that transmits impulses from the CNS to the skeletal muscle is the: somatic nervous system.
Schwann cells have a function in the PNS that is similar to that of which cells in the CNS? Oligodendrocytes
Which is not true of the myelin sheath? It covers cell bodies in the brain and spinal cord.
The efferent pathways of the autonomic nervous system consist of the ________ nervous systems. sympathetic and parasympathetic
Which is true of a reflex arc? It always consists of an afferent neuron and an efferent neuron.
The largest and most numerous types of neuroglia are the: Astrocytes.
Neurons in the CNS have less chance of regenerating for all of the following reasons except: microglia lay down scar tissue.
In the human nervous system: there are almost equal numbers of glia cells and neurons.
Multipolar neurons have: multiple dendrites and one axon.
The afferent pathways of the autonomic nervous system: carry feedback information to integrating centers in the brain
The nervous system is organized to do which of the following? Detect changes in the external environment, Detect changes in the internal environment, and Evaluate changes in the environment.
A neuron that transmits a nerve impulse toward the central nervous system is called a(n): sensory neuron
Fascicles are held together by a connective tissue layer called the: Perineurium.
Small distinct regions of gray matter in the CNS are called: Nuclei
Created by: Sandoval.Sam
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