The fundamental structural and functional unit of the nervous system, responsible for
transmitting and processing information. - ANS >> Neuron
Branch-like extensions of a neuron that receive signals from other neurons or sensory
receptors. - ANS >> Dendrite
The main output structure of a neuron, responsible for transmitting electrical signals
away from the cell body. - ANS >> Axon
Specialized junction where a neuron communicates with another neuron or a target cell.
- ANS >> Synapse
The myelin sheath is formed by oligodendrocytes in the peripheral nervous system and
Schwann cells in the central nervous system. - ANS >> False
Which type of ion channel opens in response to a change in membrane potential and is
responsible for generating action potentials? - ANS >> Voltage-gated channel
Which part of the neuron has the arrow pointing to it? - ANS >> Cell body (soma)
Saltatory conduction refers to the propagation of action potentials along myelinated
axons. What is the significance of this mode of conduction? - ANS >> It will allow for
faster conduction of action potentials.
The organization of the nervous system involves two main divisions. Which of the
following correctly identifies these divisions? - ANS >> Central and Peripheral Nervous
Systems
Which of the following best describes spatial summation? - ANS >> Integration of
postsynaptic potentials from multiple presynaptic neurons
Astrocytes play a role in maintaining the blood-brain barrier and regulating the
extracellular environment of neurons. - ANS >> True
Which of the following best defines graded potential? - ANS >> Small, localized
changes in membrane potential that vary in amplitude.
transmitting and processing information. - ANS >> Neuron
Branch-like extensions of a neuron that receive signals from other neurons or sensory
receptors. - ANS >> Dendrite
The main output structure of a neuron, responsible for transmitting electrical signals
away from the cell body. - ANS >> Axon
Specialized junction where a neuron communicates with another neuron or a target cell.
- ANS >> Synapse
The myelin sheath is formed by oligodendrocytes in the peripheral nervous system and
Schwann cells in the central nervous system. - ANS >> False
Which type of ion channel opens in response to a change in membrane potential and is
responsible for generating action potentials? - ANS >> Voltage-gated channel
Which part of the neuron has the arrow pointing to it? - ANS >> Cell body (soma)
Saltatory conduction refers to the propagation of action potentials along myelinated
axons. What is the significance of this mode of conduction? - ANS >> It will allow for
faster conduction of action potentials.
The organization of the nervous system involves two main divisions. Which of the
following correctly identifies these divisions? - ANS >> Central and Peripheral Nervous
Systems
Which of the following best describes spatial summation? - ANS >> Integration of
postsynaptic potentials from multiple presynaptic neurons
Astrocytes play a role in maintaining the blood-brain barrier and regulating the
extracellular environment of neurons. - ANS >> True
Which of the following best defines graded potential? - ANS >> Small, localized
changes in membrane potential that vary in amplitude.
