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Quiz: Nerve System Cells and Nerve Signaling

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Quiz: Nerve System Cells and Nerve Signaling
Alexandra Bozan
Quiz by Alexandra Bozan, updated more than 1 year ago
Alexandra Bozan
Created by Alexandra Bozan about 7 years ago
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Resource summary

Question 1

Question
A neurotransmitter can be either excitatory or inhibitory depending on the postsynaptic receptor.
Answer
  • True
  • False

Question 2

Question
The autonomic nervous system consists of the:
Answer
  • peripheral and afferent nervous systems
  • sympathetic and parasympathetic nervous systems
  • sympathetic and efferent nervous systems
  • parasympathetic and somatic nervous systems

Question 3

Question
Gray matter in the brain and spinal cord consists primarily of:
Answer
  • NERVE FIBERS
  • neuroglia
  • axons
  • cell bodies

Question 4

Question
Neurotransmitters are released in a synapse and bind to
Answer
  • presynaptic terminals
  • the synaptic cleft
  • the base of the axon
  • receptors on the postsynaptic neuron

Question 5

Question
Compared to the outside of the neuron, the inside has a [blank_start]negative[blank_end] charge.
Answer
  • negative
  • positive
  • equal
  • none of the above

Question 6

Question
When an impulse reaches a synapse
Answer
  • two nerve fibers come in direct contact
  • impulses will pass in either direction
  • an electrical spark will jump the gap
  • chemical transmitters are released

Question 7

Question
Along a neuron, the correct pathway for impulse conduction is
Answer
  • dendrite, axon, cell body, and receptor
  • dendrite, cell body, and axon
  • axon, cell body, and dendrite
  • receptor, axon, and cell body

Question 8

Question
Which is true of an action potential?
Answer
  • The plasma membrane is impermeable to Na+ and K+ ions.
  • Na+ ions move extracellularly.
  • The charges become equal on the outside and inside of the plasma membrane.
  • The outside of the plasma membrane is negatively charged and the inside is positively charged.

Question 9

Question
In the human nervous system:
Answer
  • most of the cells are neurons
  • most of the cells are glia cells
  • there are almost equal numbers of glia cells and neurons
  • the ratio of cells is unknown because of the complexity of the nervous system

Question 10

Question
Which of the following is a function of the central nervous system (CNS)?
Answer
  • integrating sensory information
  • evaluating the information
  • Initiating an outgoing response e are f
  • all of the above are functions

Question 11

Question
Small, distinct regions of gray matter within the CNS are called nuclei.
Answer
  • True
  • False

Question 12

Question
Interneurons reside:
Answer
  • in the CNS and peripheral nervous system
  • in the CNS only
  • in the peripheral nervous system only
  • none of the above

Question 13

Question
The central nervous system consists of the brain, spinal cord, and nerves.
Answer
  • True
  • False

Question 14

Question
Which of the following is true of spatial summation?
Answer
  • Simultaneous stimulation of more than one postsynaptic neuron occurs.
  • Impulses are fired in a rapid succession by the same neuron.
  • Neurotransmitters released simultaneously from several presynaptic knobs converge on one postsynaptic neuron.
  • Speed of impulse transmission is increased when several neurotransmitters are released.

Question 15

Question
A neuron that transmits a nerve impulse toward the central nervous system is called a(n):
Answer
  • motor neuron
  • sensory neuron
  • interneuron
  • bipolar neuron

Question 16

Question
Nerves that contain mostly afferent fibers are called:
Answer
  • sensory nerves
  • motor nerves
  • mixed nerves
  • Schwann nerves

Question 17

Question
The part of the nervous system that transmits impulses from the CNS to the skeletal muscle is the:
Answer
  • somatic nervous system
  • autonomic nervous system
  • central nervous system
  • afferent division

Question 18

Question
Which is true of a reflex arc?
Answer
  • It does not involve the brain.
  • It always consists of an afferent and an efferent neuron.
  • It always consists of an afferent neuron, an efferent neuron, and an interneuron.
  • It always consists of an afferent neuron, an efferent neuron, the brain, and the spinal cord.

Question 19

Question
The central nervous system is composed of efferent nerves only.
Answer
  • True
  • False

Question 20

Question
A synapse consists of:
Answer
  • a synaptic knob
  • a synaptic cleft
  • the plasma membrane of a postsynaptic neuron
  • all of the above
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