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Questions and Answers
What primarily determines the flux of ions across a membrane?
What primarily determines the flux of ions across a membrane?
- Temperature only
- Membrane thickness
- Electrochemical driving force and conductance (correct)
- Surface area of the membrane
Which factor indicates the ability for electrical charge to flow through the membrane?
Which factor indicates the ability for electrical charge to flow through the membrane?
- Conductance (correct)
- Membrane potential
- Capacitance
- Resistance
What is the primary characteristic of an ion channel?
What is the primary characteristic of an ion channel?
- Ion selectivity and states of channel (correct)
- Inability to open
- Fixed conductance at all times
- Ion impermeability
Which of the following best describes the 'resting membrane potential'?
Which of the following best describes the 'resting membrane potential'?
What does the Nernst equation primarily calculate?
What does the Nernst equation primarily calculate?
What is the primary function of excitable tissue in the body?
What is the primary function of excitable tissue in the body?
What distinguishes the central nervous system from the peripheral nervous system?
What distinguishes the central nervous system from the peripheral nervous system?
Which type of signal involves the release of hormones into the bloodstream?
Which type of signal involves the release of hormones into the bloodstream?
Which is true regarding action potentials in neurons?
Which is true regarding action potentials in neurons?
What role does the synapse play in the nervous system?
What role does the synapse play in the nervous system?
Which system is primarily responsible for involuntary bodily functions?
Which system is primarily responsible for involuntary bodily functions?
What is the significance of cable theory in neurophysiology?
What is the significance of cable theory in neurophysiology?
What distinguishes the role of neurons from that of wire conductors?
What distinguishes the role of neurons from that of wire conductors?
Which nuclei are considered components of the striatum?
Which nuclei are considered components of the striatum?
What is a primary neurotransmitter involved in the functioning of the basal ganglia?
What is a primary neurotransmitter involved in the functioning of the basal ganglia?
Which symptom is NOT typically associated with Parkinson's disease?
Which symptom is NOT typically associated with Parkinson's disease?
Which pathway in the basal ganglia is primarily involved in facilitating movement?
Which pathway in the basal ganglia is primarily involved in facilitating movement?
Hemiballism is primarily caused by lesions in which structure?
Hemiballism is primarily caused by lesions in which structure?
What therapeutic method is commonly used in treating Parkinson’s disease by increasing dopamine levels?
What therapeutic method is commonly used in treating Parkinson’s disease by increasing dopamine levels?
Which function is primarily attributed to the cerebellum rather than the basal ganglia?
Which function is primarily attributed to the cerebellum rather than the basal ganglia?
Which of the following statements about the components of the basal ganglia is incorrect?
Which of the following statements about the components of the basal ganglia is incorrect?
What occurs during depolarization in an action potential?
What occurs during depolarization in an action potential?
Which of the following describes the all-or-none principle of action potentials?
Which of the following describes the all-or-none principle of action potentials?
What is the primary role of the length constant in neurophysiology?
What is the primary role of the length constant in neurophysiology?
What characteristic is common to both myelinated and unmyelinated fibers in terms of action potential propagation?
What characteristic is common to both myelinated and unmyelinated fibers in terms of action potential propagation?
Which of the following variables is involved in calculating the time constant of a membrane?
Which of the following variables is involved in calculating the time constant of a membrane?
What is the primary feature of synaptic transmission through ionotropic receptors?
What is the primary feature of synaptic transmission through ionotropic receptors?
During repolarization, which of the following events predominantly occurs?
During repolarization, which of the following events predominantly occurs?
What describes the propagation of action potentials in myelinated fibers?
What describes the propagation of action potentials in myelinated fibers?
Which type of synaptic transmission is characterized by neurotransmitter release that causes an excitatory postsynaptic potential (EPSP)?
Which type of synaptic transmission is characterized by neurotransmitter release that causes an excitatory postsynaptic potential (EPSP)?
What role does the axon hillock play in action potential generation?
What role does the axon hillock play in action potential generation?
What is the primary function of the reticular formation?
What is the primary function of the reticular formation?
Which of the following pathways is classified as a pyramidal pathway?
Which of the following pathways is classified as a pyramidal pathway?
What aspect of motor control does the supplementary motor area primarily manage?
What aspect of motor control does the supplementary motor area primarily manage?
Which reflex allows the eyes to stabilize gaze during head movements?
Which reflex allows the eyes to stabilize gaze during head movements?
What is the primary role of gamma motoneurons?
What is the primary role of gamma motoneurons?
Which component of the brainstem is primarily responsible for the respiratory center?
Which component of the brainstem is primarily responsible for the respiratory center?
In which part of the brain would you find the primary motor cortex?
In which part of the brain would you find the primary motor cortex?
What is the role of vestibular nuclei in motor control?
What is the role of vestibular nuclei in motor control?
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