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WorksheetsNew nervous system quiz 2
Total questions: 23
Worksheet time: 17mins
The site of intercellular communication between neurons or between a neuron and an effector is the
Telodendria
Soma
Collaterals
Hillock
Synapse
Neurotransmitters are released at the
Telodendria
Axon terminals
Collaterals
Hillock
Synapse
Which of the following is not a function of the neuroglia?
Support
Secretion of cerebral spinal fluid
Isolation of neurons
Signal transduction
Each of the following is a type of neuroglial cell of the central nervous system except
Astrocytes
Satellite cells
Oligodendrocytes
Microglia
Ependymal cells
The most numerous glial cells in the CNS are the
Astrocytes
Satellite cells
Oligodendrocytes
Microglia
Ependymal cells
Neurons that are small and offer no anatomical clues to distinguish the axon from the dendrite are
Anaxonic
Unipolar
Multipolar
Bipolar
Neurons in which the dendrite and axon are continuous and the soma lies off to one side are called
Anaxonic
Unipolar
Bipolar
Multipolar
Neurons that have one axon and one dendrite are called
Anaxonic
Unipolar
Bipolar
Multipolar
Neurons that have several dendrites and one long axon are called
Anaxonic
Unipolar
Multipolar
Bipolar
Sensory neurons of the PNS are
Anaxonic
Unipolar
Bipolar
Multipolar
Which of the following is not a glial cell of the nervous system?
Schwann cells
Neurons
Ependymal cells
Microglia
Satellite cells
The myelin sheaths that surround the axons of some of the neurons in the CNS are formed by
Astrocytes
Satellite cells
Oligodendrocytes
Microglia
Ependymal cells
The myelin sheath of axons in the PNS is formed by the
Astrocytes
Satellite cells
Oligodendrocytes
Microglia
Schwann cells
Small phagocytic cells that are especially obvious in damaged tissue in the CNS are the
Astrocytes
Satellite cells
Oligodendrocytes
Microglia
Ependymal cells
The type of glial cells that line the ventricles and spinal canal are the
Astrocytes
Satellite cells
Oligodendrocytes
Microglia
Ependymal cells
Which of the following is a function of microglia in the CNS?
Maintaining the blood-brain barrier
Functioning in action potential transmission
Guiding neuron development
Performing repairs and cleanup in damaged neural tissue
Creating a 3-dimensional framework for the CNS
Cells responsible for information processing and transfer are the
Neuroglia
Schwann cells
Neurons
Astrocytes
Microglia
Which of the following is not involved in creating the resting potential of a neuron?
Diffusion of potassium ions out of the cell
Diffusion of sodium ions into the cell
The membrane permeability for sodium ions greater than potassium ions
The membrane permeability of potassium ions greater than sodium ions
The interior of the cell membrane has an excess of negatively charged protein molecules
At the normal resting potential of a typical neuron, its ion exchange pump transports
1 intracellular sodium ion for 2 extracellular potassium ions
2 intracellular sodium ions for 1 extracellular potassium ion
3 intracellular sodium ions for 1 extracellular potassium ion
3 intracellular sodium ions for 2 extracellular potassium ions
3 extracellular sodium ions for 2 intracellular potassium ions
Membrane channels that are always open are called _____________ channels
Active
Gated
Passive
Regulated
Local
Opening of sodium channels in the membrane of a neuron results in
Depolarization
Repolarization
Hyperpolarization
Increased negative charge inside the membrane
Reestablishment of the resting potential
Voltage regulated channels can be found
At the motor end plate
On the surface of dendrites
In the membrane that covers axons
On the soma of neurons
Along the perikaryon of neurons
Active neurons require large amounts of ATP for all of the following, except
Synthesis and recycling of neurotransmitters
Axoplasmic transport in the axon
The activity of the sodium-potassium pump
All the above
Non of the above
