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Week 7
Nervous system cells
| Question | Answer |
|---|---|
| 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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