0
What else can I help you with?
Name two channels through which chloride ions could pass into the cell?
Chloride ions can pass into the cell through voltage-gated chloride channels and ligand-gated chloride channels. These channels allow for the movement of chloride ions across the cell membrane in response to changes in voltage or binding of specific ligands.
What goes from the synapse to the cell body?
Small chemicals called 'neurotransmitters' that are released into the synapse will diffuse across the synaptic cleft and bind to postsynaptic receptors (which may be on a cell body, or a dendrite). Examples of neurotransmitters are: adrenaline/epinephrine, acetylcholine, glutamate, serotonin, GABA, glycine and dopamine.
Neurotransmitters attach to what molecules in the cell membrane?
Neurotransmitters attach to specific proteins called receptors on the cell membrane. These receptors are typically ligand-gated ion channels or G protein-coupled receptors that initiate cellular responses when neurotransmitters bind to them.
What transfers the nerve impulse from one neuron to another cell at the synapse?
When the sodium ions that entered the cell through the ion channels diffuse into the axon terminal of the neuron, they activate voltage-gated calcium ion channels. As calcium ions flow into the cell, neurotransmitters are released from the cell. These neurotransmitters diffuse across the synapse and activate sodium ion channels in the post-synaptic cell, allowing sodium to flow in and depolarize the cell enough to start another action potential.
What are other names for a pore in a cell membrane?
Depends on what the pore does. If they are channels - they are called Channels. Voltage gated / ligand activated channels. If they are to communicate with neighbouring cells - they are called gap junctions.
What causes absence seizure?
Absence seizures are implicated with an abnormal imbalance of certain chemicals in the brain that modulate nerve cell activity (one of these neurotransmitters is called GABA, which functions as an inhibitor).
What can excite a neuron or stop it from transmitting?
Excitatory signals, such as neurotransmitters like glutamate, can stimulate a neuron to transmit an electrical impulse. Inhibitory signals, like neurotransmitters GABA, can prevent a neuron from transmitting by hyperpolarizing the cell membrane and decreasing the likelihood of an action potential.
How do ligand-gated channels differ from voltage-gated channels in terms of their mechanisms of activation and regulation?
Ligand-gated channels are activated by binding of specific molecules (ligands) to the channel, while voltage-gated channels are activated by changes in the electrical potential across the cell membrane. Ligand-gated channels are regulated by the presence of ligands, while voltage-gated channels are regulated by changes in membrane potential.
What are the key differences between ligand-gated channels and voltage-gated channels in terms of their mechanisms of activation and regulation?
Ligand-gated channels are activated by binding of specific molecules (ligands) to the channel, while voltage-gated channels are activated by changes in the electrical potential across the cell membrane. Ligand-gated channels are regulated by the presence of ligands, while voltage-gated channels are regulated by changes in membrane potential.
What is the difference between ligand-gated and voltage-gated channels in terms of their mechanisms of activation and regulation?
Ligand-gated channels are activated by binding of specific molecules (ligands) to the channel, while voltage-gated channels are activated by changes in the electrical potential across the cell membrane. Ligand-gated channels are regulated by the presence of ligands, while voltage-gated channels are regulated by changes in membrane potential.
What are the key differences between ligand-gated ion channels and voltage-gated ion channels in terms of their mechanisms of activation and regulation?
Ligand-gated ion channels are activated by binding of specific molecules (ligands) to the channel, while voltage-gated ion channels are activated by changes in the electrical potential across the cell membrane. Ligand-gated channels are regulated by the presence of ligands, while voltage-gated channels are regulated by changes in membrane potential.
What is the difference between ligand-gated and voltage-gated ion channels in terms of their mechanisms of activation and regulation?
Ligand-gated ion channels are activated by binding of specific molecules (ligands) to the channel, while voltage-gated ion channels are activated by changes in the electrical potential across the cell membrane. Ligand-gated channels are regulated by the presence of ligands, while voltage-gated channels are regulated by changes in membrane potential.
