Podcast
Questions and Answers
What is the role of the electrical gradient in nerve impulse transmission?
What is the role of the electrical gradient in nerve impulse transmission?
- To push sodium ions out of the cell
- To pull sodium ions into the cell (correct)
- To maintain a constant concentration of potassium ions
- To decrease the membrane potential
What type of gated channel opens in response to a neurotransmitter binding to its receptor?
What type of gated channel opens in response to a neurotransmitter binding to its receptor?
- Ligand gated channel (correct)
- Mechanically gated channel
- Graded potential channel
- Voltage gated channel
What is the state of a neuron prior to the sending of a nerve impulse?
What is the state of a neuron prior to the sending of a nerve impulse?
- Threshold of excitement
- Hyperpolarization
- Depolarization
- Resting potential (correct)
What is the result of a stimulation beyond the threshold of excitement?
What is the result of a stimulation beyond the threshold of excitement?
What is the term for the rapid depolarization of a neuron?
What is the term for the rapid depolarization of a neuron?
What type of gated channel opens in response to changes in membrane potential?
What type of gated channel opens in response to changes in membrane potential?
What happens immediately after an action potential in a neuron?
What happens immediately after an action potential in a neuron?
What is the role of the sodium-potassium pump in a neuron?
What is the role of the sodium-potassium pump in a neuron?
What is the characteristic of an action potential in terms of its amplitude and velocity?
What is the characteristic of an action potential in terms of its amplitude and velocity?
What is the function of the refractory period in a neuron?
What is the function of the refractory period in a neuron?
What is the direction of potassium ions flow during the return of the neuron to its resting state?
What is the direction of potassium ions flow during the return of the neuron to its resting state?
What is the term for the jumping of an action potential from one node to another in the process of nerve impulse transmission?
What is the term for the jumping of an action potential from one node to another in the process of nerve impulse transmission?
What type of synapse is more abundant in the human nervous system?
What type of synapse is more abundant in the human nervous system?
What is the effect of Inhibitory Post-Synaptic Potentials (IPSPs) on the neuron?
What is the effect of Inhibitory Post-Synaptic Potentials (IPSPs) on the neuron?
What occurs at the nodes of Ranvier during the transmission of a nerve impulse?
What occurs at the nodes of Ranvier during the transmission of a nerve impulse?
What is the function of the synapse in the nervous system?
What is the function of the synapse in the nervous system?
What is the period during which the membrane cannot produce an action potential?
What is the period during which the membrane cannot produce an action potential?
