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Quiz: Nerve System Cells and Nerve Signaling
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Perguntas do quiz (20)
1A neurotransmitter can be either excitatory or inhibitory depending on the postsynaptic receptor.
- AVerdadeiro
- BFalso
2The autonomic nervous system consists of the:
- Aperipheral and afferent nervous systems
- Bsympathetic and parasympathetic nervous systems
- Csympathetic and efferent nervous systems
- Dparasympathetic and somatic nervous systems
3Gray matter in the brain and spinal cord consists primarily of:
- ANERVE FIBERS
- Bneuroglia
- Caxons
- Dcell bodies
4Neurotransmitters are released in a synapse and bind to
- Apresynaptic terminals
- Bthe synaptic cleft
- Cthe base of the axon
- Dreceptors on the postsynaptic neuron
5Compared to the outside of the neuron, the inside has a [blank_start]negative[blank_end] charge.
- Anegative
- Bpositive
- Cequal
- Dnone of the above
6When an impulse reaches a synapse
- Atwo nerve fibers come in direct contact
- Bimpulses will pass in either direction
- Can electrical spark will jump the gap
- Dchemical transmitters are released
7Along a neuron, the correct pathway for impulse conduction is
- Adendrite, axon, cell body, and receptor
- Bdendrite, cell body, and axon
- Caxon, cell body, and dendrite
- Dreceptor, axon, and cell body
8Which is true of an action potential?
- AThe plasma membrane is impermeable to Na+ and K+ ions.
- BNa+ ions move extracellularly.
- CThe charges become equal on the outside and inside of the plasma membrane.
- DThe outside of the plasma membrane is negatively charged and the inside is positively charged.
9In the human nervous system:
- Amost of the cells are neurons
- Bmost of the cells are glia cells
- Cthere are almost equal numbers of glia cells and neurons
- Dthe ratio of cells is unknown because of the complexity of the nervous system
10Which of the following is a function of the central nervous system (CNS)?
- Aintegrating sensory information
- Bevaluating the information
- CInitiating an outgoing response e are f
- Dall of the above are functions
11Small, distinct regions of gray matter within the CNS are called nuclei.
- AVerdadeiro
- BFalso
12Interneurons reside:
- Ain the CNS and peripheral nervous system
- Bin the CNS only
- Cin the peripheral nervous system only
- Dnone of the above
13The central nervous system consists of the brain, spinal cord, and nerves.
- AVerdadeiro
- BFalso
14Which of the following is true of spatial summation?
- ASimultaneous stimulation of more than one postsynaptic neuron occurs.
- BImpulses are fired in a rapid succession by the same neuron.
- CNeurotransmitters released simultaneously from several presynaptic knobs converge on one postsynaptic neuron.
- DSpeed of impulse transmission is increased when several neurotransmitters are released.
15A neuron that transmits a nerve impulse toward the central nervous system is called a(n):
- Amotor neuron
- Bsensory neuron
- Cinterneuron
- Dbipolar neuron
16Nerves that contain mostly afferent fibers are called:
- Asensory nerves
- Bmotor nerves
- Cmixed nerves
- DSchwann nerves
17The part of the nervous system that transmits impulses from the CNS to the skeletal muscle is the:
- Asomatic nervous system
- Bautonomic nervous system
- Ccentral nervous system
- Dafferent division
18Which is true of a reflex arc?
- AIt does not involve the brain.
- BIt always consists of an afferent and an efferent neuron.
- CIt always consists of an afferent neuron, an efferent neuron, and an interneuron.
- DIt always consists of an afferent neuron, an efferent neuron, the brain, and the spinal cord.
19The central nervous system is composed of efferent nerves only.
- AVerdadeiro
- BFalso
20A synapse consists of:
- Aa synaptic knob
- Ba synaptic cleft
- Cthe plasma membrane of a postsynaptic neuron
- Dall of the above
Informações
- Descrição
- Quiz: Nerve System Cells and Nerve Signaling
- Autor
- Alexandra Bozan
- Idioma
- English
- Visualizações
- 93
- Etiquetas
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