Podcast
Questions and Answers
What type of synapse involves a direct contact between cells allowing synchronization, such as in the contraction of the heart?
What type of synapse involves a direct contact between cells allowing synchronization, such as in the contraction of the heart?
- Electrical synapse (correct)
- Chemical synapse
- Neuronal synapse
- Signal synapse
Which neurotransmitter is commonly released from axon terminals in a chemical synapse?
Which neurotransmitter is commonly released from axon terminals in a chemical synapse?
- Serotonin
- Acetylcholine (correct)
- Dopamine
- GABA
What occurs when voltage-gated Ca2+ channels open in a presynaptic neuron?
What occurs when voltage-gated Ca2+ channels open in a presynaptic neuron?
- Release of neurotransmitters via endocytosis (correct)
- Depolarization of the postsynaptic membrane
- Inhibition of action potential propagation
- Closure of sodium channels in the postsynaptic neuron
What is the main function of an excitatory postsynaptic potential (EPSP) in a neuronal system?
What is the main function of an excitatory postsynaptic potential (EPSP) in a neuronal system?
In what scenario does temporal summation occur in a synapse?
In what scenario does temporal summation occur in a synapse?
Which ion, when binding to ion channels on a postsynaptic neuron, is responsible for causing hyperpolarization?
Which ion, when binding to ion channels on a postsynaptic neuron, is responsible for causing hyperpolarization?
What is the function of an inhibitory postsynaptic potential (IPSP) in a neural circuit?
What is the function of an inhibitory postsynaptic potential (IPSP) in a neural circuit?
During spatial summation, what happens when different EPSPs add up together at a synapse?
During spatial summation, what happens when different EPSPs add up together at a synapse?
What happens when only a single ion channel opens during an excitatory postsynaptic potential?
What happens when only a single ion channel opens during an excitatory postsynaptic potential?
Explain the process involved when voltage-gated Ca2+ channels open in a presynaptic neuron.
Explain the process involved when voltage-gated Ca2+ channels open in a presynaptic neuron.
Define an excitatory postsynaptic potential (EPSP) and explain its significance in neuronal communication.
Define an excitatory postsynaptic potential (EPSP) and explain its significance in neuronal communication.
Describe the process of temporal summation at a synapse and how it influences neuronal signaling.
Describe the process of temporal summation at a synapse and how it influences neuronal signaling.
Explain the concept of spatial summation in a synapse and its role in neural communication.
Explain the concept of spatial summation in a synapse and its role in neural communication.
What is the mechanism of an inhibitory postsynaptic potential (IPSP) and how does it affect neuronal excitability?
What is the mechanism of an inhibitory postsynaptic potential (IPSP) and how does it affect neuronal excitability?
During an inhibitory postsynaptic potential (IPSP), a single ion channel opens to cause depolarization in the post-synaptic neuron.
During an inhibitory postsynaptic potential (IPSP), a single ion channel opens to cause depolarization in the post-synaptic neuron.
Temporal summation involves the constant firing of inhibitory postsynaptic potentials (IPSPs) to reach the threshold value for triggering an action potential.
Temporal summation involves the constant firing of inhibitory postsynaptic potentials (IPSPs) to reach the threshold value for triggering an action potential.
Spatial summation occurs when different EPSPs subtract from each other at a synapse.
Spatial summation occurs when different EPSPs subtract from each other at a synapse.
In chemical synapses, there is direct contact between the pre-synapse and the post-synapse.
In chemical synapses, there is direct contact between the pre-synapse and the post-synapse.
When voltage-gated Ca2+ channels open in a presynaptic neuron, Ca2+ enters the postsynaptic neuron.
When voltage-gated Ca2+ channels open in a presynaptic neuron, Ca2+ enters the postsynaptic neuron.
