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What determines whether a neuron has an action potential?
epsp's & IPSP's
What type of membrane potential is generated at the synapse on the postsynaptic membrane?
It can be an excitatory postsynaptic potential (EPSP) or an inhibitory postsynaptic potential (IPSP), depending on the synapse. The EPSP depolarizes the membrane, while the IPSP hyperpolarizes it.
What determines if an action potential is initiated in the postsynaptic neuron?
Every time neurotransmitter is released from the presynaptic neuron it generates an excitatory post synaptic potential(EPSP) in the postsynaptic neuron. When the EPSP is greater than the threshold for excitation an action potential is generated.
When a second EPSP arrives at a single synapse before the effect of the first have disappeared what occurs?
temporary summation
Is end plate current the same as end plate potential?
No, end plate current of excitatory post-synaptic current(EPSC) represents the sum of the currents through thousands of AChRs in the postsynaptic membrane. The end-plate potential or Excitatory post-synaptic potential(EPSP) is the local depolarisation at the post-synaptic membrane which eventually results in an action potential at the postsynaptic membrane of the neuromuscular junction. EPSP is much slower than the EPSC because of the time necessary to charge and discharge the capacitance of the muscle membrane. Hope this helps, there is a lot more detail in the notes we were given which I'll be happy to share if you need it.
The effect of a neurotransmitter on the postsynaptic cell occurs when the neurotransmitter?
binds to specific receptors on postsynaptic cell membrane
What are epsp?
EPSP is an abbreviation for excitatory postsynaptic potential. This is a graded depolarization of a postynaptic membrane responding to neurotransmitter stimulation.
What determines whether a neuron has an action potential?
epsp's & IPSP's
What is the difference between EPSP and an IPSP?
An EPSP is an excitatory postsynaptic potential, which represent input coming from excitatory cells, whereas an inhibitory postsynaptic potential represents input driven by inhibitory presynaptic cells.
What type of membrane potential is generated at the synapse on the postsynaptic membrane?
It can be an excitatory postsynaptic potential (EPSP) or an inhibitory postsynaptic potential (IPSP), depending on the synapse. The EPSP depolarizes the membrane, while the IPSP hyperpolarizes it.
What determines if an action potential is initiated in the postsynaptic neuron?
Every time neurotransmitter is released from the presynaptic neuron it generates an excitatory post synaptic potential(EPSP) in the postsynaptic neuron. When the EPSP is greater than the threshold for excitation an action potential is generated.
When a second EPSP arrives at a single synapse before the effect of the first have disappeared what occurs?
temporary summation
What will occur when an excitatory postsynaptic potential EPSP is being generated on the dendritic membrane?
A single type of channel will open, permitting simultaneous flow of sodium and potassium.
Why do rods not function effectively in bright light?
Rods produce steady ion flow in the dark that cuases an IPSP that produces no signal in optic nerve. When rod absorbs light, dark current ceases and no inhibiion occurs to EPSP occurs in optic nerve.
Is end plate current the same as end plate potential?
No, end plate current of excitatory post-synaptic current(EPSC) represents the sum of the currents through thousands of AChRs in the postsynaptic membrane. The end-plate potential or Excitatory post-synaptic potential(EPSP) is the local depolarisation at the post-synaptic membrane which eventually results in an action potential at the postsynaptic membrane of the neuromuscular junction. EPSP is much slower than the EPSC because of the time necessary to charge and discharge the capacitance of the muscle membrane. Hope this helps, there is a lot more detail in the notes we were given which I'll be happy to share if you need it.
How do different societies decide what will be produced by whom will it be produced and for whom will it be produced?
In a free market economy, you the owner gets to chose who it is produced by, how it is produced and what is prdouced. In a command economy, the government chooses how it is produced, who it is produced by and what is produced. A mixed economy is mixed with command and free market.
Where is semen produced in the penis?
Its not. Semen is produced in the testis & the prostate.
