HLSC2410 PRACTICE QUIZZES OVERVIEW QUESTIONS WITH
COMPLETE VERIFIED SOLUTIONS
Depolarization
Phase where sodium enters neuron, making it positive.
Primary Active Transport
Movement against concentration gradient using ATPase pump.
Neurotransmitter Termination
Enzymatic breakdown or re-uptake in synapse.
Ionotropic Receptor
Channel opens upon neurotransmitter binding, allowing ions.
Afferent Pathway
Sensory receptors detect changes, sending signals to CNS.
Spatial Summation
Simultaneous EPSPs from different locations on neuron.
Exocytosis
Vesicle fusion with membrane, releasing neurotransmitters.
Intracellular Fluid (ICF)
Fluid inside cells, high in potassium ions.
Extracellular Fluid (ECF)
Fluid outside cells, contains plasma and interstitial fluid.
Hydrophilic Substances
,Water-soluble molecules, e.g., sodium ions.
Phospholipid Bilayer
Selective barrier allowing some substances to pass.
Absolute Refractory Period
Period where no second action potential can occur.
Resting Membrane Potential
State of neuron, most permeable to potassium ions.
Voltage-Gated Sodium Channels
Channels that open during depolarization of action potential.
Neurotransmitter Re-uptake
Process of reabsorbing neurotransmitters for reuse.
Calcium's Role
Stimulates neurotransmitter release during exocytosis.
Negative Feedback Regulation
Mechanism to restore homeostasis after temperature increase.
Ligand-Gated Channels
Channels that open in response to specific ligands.
Cotransporter
Transport mechanism moving substances together across membrane.
Hyperpolarization
Increase in membrane potential, making it more negative.
Repolarization
Return of membrane potential to resting state.
, Neurotransmitter Affinity
Strength of binding between neurotransmitter and receptor.
Sodium Ion Movement
Key factor in depolarization during action potentials.
Potassium Ion Movement
Critical for maintaining resting membrane potential.
Vesicle Fusion
Process where vesicles release contents into synaptic cleft.
Action Potential
Rapid change in membrane potential during neuronal firing.
Neurotransmitter Activity
Function of neurotransmitters in synaptic transmission.
Saturation at Binding Site
Percentage of binding sites occupied by a drug.
High Affinity
Stronger attraction of a drug to its binding site.
Graded Potential
Change in membrane potential that varies in size.
IPSP
Inhibitory postsynaptic potential, making the cell more negative.
Membrane Potential
Voltage difference across a cell's membrane.
Gap Junctions
COMPLETE VERIFIED SOLUTIONS
Depolarization
Phase where sodium enters neuron, making it positive.
Primary Active Transport
Movement against concentration gradient using ATPase pump.
Neurotransmitter Termination
Enzymatic breakdown or re-uptake in synapse.
Ionotropic Receptor
Channel opens upon neurotransmitter binding, allowing ions.
Afferent Pathway
Sensory receptors detect changes, sending signals to CNS.
Spatial Summation
Simultaneous EPSPs from different locations on neuron.
Exocytosis
Vesicle fusion with membrane, releasing neurotransmitters.
Intracellular Fluid (ICF)
Fluid inside cells, high in potassium ions.
Extracellular Fluid (ECF)
Fluid outside cells, contains plasma and interstitial fluid.
Hydrophilic Substances
,Water-soluble molecules, e.g., sodium ions.
Phospholipid Bilayer
Selective barrier allowing some substances to pass.
Absolute Refractory Period
Period where no second action potential can occur.
Resting Membrane Potential
State of neuron, most permeable to potassium ions.
Voltage-Gated Sodium Channels
Channels that open during depolarization of action potential.
Neurotransmitter Re-uptake
Process of reabsorbing neurotransmitters for reuse.
Calcium's Role
Stimulates neurotransmitter release during exocytosis.
Negative Feedback Regulation
Mechanism to restore homeostasis after temperature increase.
Ligand-Gated Channels
Channels that open in response to specific ligands.
Cotransporter
Transport mechanism moving substances together across membrane.
Hyperpolarization
Increase in membrane potential, making it more negative.
Repolarization
Return of membrane potential to resting state.
, Neurotransmitter Affinity
Strength of binding between neurotransmitter and receptor.
Sodium Ion Movement
Key factor in depolarization during action potentials.
Potassium Ion Movement
Critical for maintaining resting membrane potential.
Vesicle Fusion
Process where vesicles release contents into synaptic cleft.
Action Potential
Rapid change in membrane potential during neuronal firing.
Neurotransmitter Activity
Function of neurotransmitters in synaptic transmission.
Saturation at Binding Site
Percentage of binding sites occupied by a drug.
High Affinity
Stronger attraction of a drug to its binding site.
Graded Potential
Change in membrane potential that varies in size.
IPSP
Inhibitory postsynaptic potential, making the cell more negative.
Membrane Potential
Voltage difference across a cell's membrane.
Gap Junctions
