Podcast
Questions and Answers
What is the primary function of motor neurons?
What is the primary function of motor neurons?
- Processing information in the central nervous system
- Sending signals from the central nervous system to the effector organs (correct)
- Sending signals from sensory receptors to the central nervous system
- Generating electrical current across the membrane
What is the resting membrane potential of a typical neuron?
What is the resting membrane potential of a typical neuron?
- -40 mV
- -70 mV (correct)
- -90 mV
- 0 mV
Which type of cells are capable of generating an electric current across the membrane?
Which type of cells are capable of generating an electric current across the membrane?
- Excitable cells (correct)
- Red blood cells
- Non-excitable cells
- Endothelial cells
Which cells have a resting membrane potential of -8 mV?
Which cells have a resting membrane potential of -8 mV?
What is the significance of the differential distribution of charged particles across the membrane in excitable cells?
What is the significance of the differential distribution of charged particles across the membrane in excitable cells?
Which type of muscle cells are examples of excitable cells?
Which type of muscle cells are examples of excitable cells?
What determines the effect of each synapse on a neuron's likelihood of producing an action potential?
What determines the effect of each synapse on a neuron's likelihood of producing an action potential?
What is the term for the effect of location on the effect of a postsynaptic potential?
What is the term for the effect of location on the effect of a postsynaptic potential?
What is the term for the effect of timing on postsynaptic potential effect?
What is the term for the effect of timing on postsynaptic potential effect?
What happens when the membrane potential at the axon hillock reaches the threshold value?
What happens when the membrane potential at the axon hillock reaches the threshold value?
How do action potentials differ from postsynaptic potentials in terms of amplitude changes?
How do action potentials differ from postsynaptic potentials in terms of amplitude changes?
Where are postsynaptic potentials produced?
Where are postsynaptic potentials produced?
What is the result of an action potential?
What is the result of an action potential?
What ensures one-way propagation of action potentials from the axon hillock to the axon terminus?
What ensures one-way propagation of action potentials from the axon hillock to the axon terminus?
Which type of molecules can diffuse right through the phospholipid bilayer?
Which type of molecules can diffuse right through the phospholipid bilayer?
What is the role of aquaporins in cell membranes?
What is the role of aquaporins in cell membranes?
Which process does not require energy and always follows a concentration gradient?
Which process does not require energy and always follows a concentration gradient?
What is the primary function of ion pumps in cell membranes?
What is the primary function of ion pumps in cell membranes?
What is the significance of the sodium-potassium pump in excitable cells?
What is the significance of the sodium-potassium pump in excitable cells?
What is the role of leak channels in cell membranes?
What is the role of leak channels in cell membranes?
What happens when a sodium channel opens in a healthy animal cell?
What happens when a sodium channel opens in a healthy animal cell?
Which part of a neuron carries an electrical signal to a synapse and converts it to a chemical signal?
Which part of a neuron carries an electrical signal to a synapse and converts it to a chemical signal?
What are the two types of postsynaptic potentials that can occur in response to neurotransmitter binding?
What are the two types of postsynaptic potentials that can occur in response to neurotransmitter binding?
Where are voltage gated ion channels located?
Where are voltage gated ion channels located?
What happens if the summation of postsynaptic potentials reaches the threshold level?
What happens if the summation of postsynaptic potentials reaches the threshold level?
What is the role of axon hillock in a neuron?
What is the role of axon hillock in a neuron?
