18 Questions
Which type of inhibition serves to limit the excitability of motor neurons?
Feedback inhibition
What is the primary significance of synaptic inhibition?
It restricts the ability of neurons and muscles to react properly and appropriately
Which of the following is a property of synaptic transmission?
Synaptic summation
What is the primary significance of the one-way conduction law (Bell-Magendie law) in synaptic transmission?
It ensures the orderly conduction of impulses in a single direction
What is the primary cause of the synaptic delay observed in synaptic transmission?
All of the above
What is the purpose of the convergence phenomenon in synaptic transmission?
To allow for the summation of signals from multiple presynaptic terminals
Which of the following is the primary function of the pre-synaptic membrane?
To facilitate the release of neurotransmitters into the synaptic cleft
What is the primary mechanism by which synaptic inhibition regulates neuronal activity?
By hyperpolarizing the post-synaptic membrane and reducing the likelihood of an action potential
What is the primary significance of the one-way conduction of action potentials in synaptic transmission?
It prevents the back-propagation of action potentials from the post-synaptic neuron to the pre-synaptic neuron
What is the primary purpose of feedback inhibition in synaptic transmission?
To prevent the depletion of neurotransmitters in the pre-synaptic neuron
Which of the following is a key property of synaptic transmission that allows for the integration of multiple inputs?
The ability to release neurotransmitters in a graded manner
What is the primary mechanism by which drugs can modulate synaptic transmission?
By interfering with the synthesis or release of neurotransmitters from the pre-synaptic neuron
What is the main function of the presynaptic vesicular grid?
Storage of neurotransmitters
Which type of receptor proteins in the postsynaptic membrane are responsible for activating cellular genes?
Enzymatic receptor proteins
In chemical synapse Type I, what is a distinguishing characteristic of the synaptic cleft compared to Type II?
Wider synaptic cleft
What is the effect of neurotransmitter GABA at a synapse?
Inhibitory effect
When a nerve impulse reaches the nerve terminal, what triggers the release of neurotransmitters?
Voltage-gated Ca channels opening
What is the process involved in developing EPSP and IPSP upon reception of neurotransmitters?
Action potential development
Test your knowledge on topics like feedback inhibition, Renshaw cells, synaptic inhibition significance, synaptic transmission properties, facilitation, one-way conduction, synaptic delay, and summation property of synapse.
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