psychology test (biology &
neuroscience)exam 2024/2025 with 100%
correct answers
what is the basic unit that allows electrical impulses to be sent as messages in the brain? - correct
answers ✔✔neurons
the process whereby the brain can adapt its structure to respond to and survive in its environment is
called _______ - correct answers ✔✔neuroplasticity
the synaptic knob forms the presynaptic side of the synapse(the microscopic space between cells). What
is on the other side of the synapse? - correct answers ✔✔dendrite
sort where the electrical activity travels from first to last - correct answers ✔✔- soma
- axon
- axon terminal
- axon hillock
which glial cells fight infections and clean up debris that could lead to dangerous inflammation in the
brain? - correct answers ✔✔astrocytes
which of the following is a purpose of glial cells? - correct answers ✔✔- speeding up electrical impulses
- support
Oligodendrocytes - correct answers ✔✔wrap around the axons of some neurons in the brain and spinal
cord
Schwann Cells - correct answers ✔✔wrap myelin around the nerves outside of the brain and spinal cord
, what determines the direction particles flow in solution? - correct answers ✔✔- positive vs. negative
charge
- size
which of the following will happen if I make the charge inside a neuron more positive? - correct answers
✔✔the neutron will be more likely to activate
T or F: neurons have a net negative charge at rest. This means that when they are active, they must have
a positive charge - correct answers ✔✔true
If potassium concentrations in the extracellular space are lowered, which of the following problems
could this cause within the neutron - correct answers ✔✔trouble maintaining resting potential
neurons depolarise when they become electrically active. This is due to the __________ - correct
answers ✔✔influx of sodium
put the following steps in the right order - correct answers ✔✔- small influx of Na(math)^+(/math)
- triggering of voltage-sensitive Na(math)^+ (/math) channels
- large influx of Na(math)^+ (/math)
-efflux of K(math)^+ (/math)
a significant factor in creating the action potential is that the neutron is ____________ - correct answers
✔✔completely impermeable to ions
Axon Na(math)^+ (/math) channels function - correct answers ✔✔speeding up conduction of the
electrical impulse
Leaky channels function - correct answers ✔✔propagation of the action potential
Lipid bilayer function - correct answers ✔✔making the membrane semi-permeable
neuroscience)exam 2024/2025 with 100%
correct answers
what is the basic unit that allows electrical impulses to be sent as messages in the brain? - correct
answers ✔✔neurons
the process whereby the brain can adapt its structure to respond to and survive in its environment is
called _______ - correct answers ✔✔neuroplasticity
the synaptic knob forms the presynaptic side of the synapse(the microscopic space between cells). What
is on the other side of the synapse? - correct answers ✔✔dendrite
sort where the electrical activity travels from first to last - correct answers ✔✔- soma
- axon
- axon terminal
- axon hillock
which glial cells fight infections and clean up debris that could lead to dangerous inflammation in the
brain? - correct answers ✔✔astrocytes
which of the following is a purpose of glial cells? - correct answers ✔✔- speeding up electrical impulses
- support
Oligodendrocytes - correct answers ✔✔wrap around the axons of some neurons in the brain and spinal
cord
Schwann Cells - correct answers ✔✔wrap myelin around the nerves outside of the brain and spinal cord
, what determines the direction particles flow in solution? - correct answers ✔✔- positive vs. negative
charge
- size
which of the following will happen if I make the charge inside a neuron more positive? - correct answers
✔✔the neutron will be more likely to activate
T or F: neurons have a net negative charge at rest. This means that when they are active, they must have
a positive charge - correct answers ✔✔true
If potassium concentrations in the extracellular space are lowered, which of the following problems
could this cause within the neutron - correct answers ✔✔trouble maintaining resting potential
neurons depolarise when they become electrically active. This is due to the __________ - correct
answers ✔✔influx of sodium
put the following steps in the right order - correct answers ✔✔- small influx of Na(math)^+(/math)
- triggering of voltage-sensitive Na(math)^+ (/math) channels
- large influx of Na(math)^+ (/math)
-efflux of K(math)^+ (/math)
a significant factor in creating the action potential is that the neutron is ____________ - correct answers
✔✔completely impermeable to ions
Axon Na(math)^+ (/math) channels function - correct answers ✔✔speeding up conduction of the
electrical impulse
Leaky channels function - correct answers ✔✔propagation of the action potential
Lipid bilayer function - correct answers ✔✔making the membrane semi-permeable
