Podcast
Questions and Answers
What primarily determines the flux of ions across a membrane?
What primarily determines the flux of ions across a membrane?
- Electrochemical driving force and conductance (correct)
- Electrical resistance alone
- Concentration gradient only
- Only membrane capacitance
What does the Nernst equation help to calculate?
What does the Nernst equation help to calculate?
- Equilibrium potential for specific ions (correct)
- Graded potential magnitude
- Resting membrane potential
- Action potential threshold
What is the primary function of ion channels?
What is the primary function of ion channels?
- To generate resting membrane potential
- To selectively allow ions to cross the membrane (correct)
- To store electrical charge
- To increase electrical resistance
What does resistance in the context of membrane properties refer to?
What does resistance in the context of membrane properties refer to?
Which statement best describes resting membrane potential?
Which statement best describes resting membrane potential?
What is the primary method by which the brain controls the body?
What is the primary method by which the brain controls the body?
Which part of the nervous system is responsible for voluntary muscle movement?
Which part of the nervous system is responsible for voluntary muscle movement?
What is an action potential?
What is an action potential?
Which system includes both the brain and the spinal cord?
Which system includes both the brain and the spinal cord?
What distinguishes organic electrochemical neurons from wire conductors?
What distinguishes organic electrochemical neurons from wire conductors?
Which of the following is NOT a component of the autonomic nervous system?
Which of the following is NOT a component of the autonomic nervous system?
What is the main function of synapses in the nervous system?
What is the main function of synapses in the nervous system?
What is the role of action potentials in nerve impulses?
What is the role of action potentials in nerve impulses?
What is the primary function of the flocculonodular lobe?
What is the primary function of the flocculonodular lobe?
Which layer of the cerebellar cortex contains Purkinje cells?
Which layer of the cerebellar cortex contains Purkinje cells?
What symptom is associated with lesions in the vestibulocerebellum?
What symptom is associated with lesions in the vestibulocerebellum?
Which type of fiber is an afferent to the cerebellum?
Which type of fiber is an afferent to the cerebellum?
What motor deficit is characterized by a loss of smooth and coordinated movements?
What motor deficit is characterized by a loss of smooth and coordinated movements?
What is the primary function of the reticular formation?
What is the primary function of the reticular formation?
Which descending motor pathway specifically controls distal muscles?
Which descending motor pathway specifically controls distal muscles?
What reflex is responsible for stabilizing gaze during head movement?
What reflex is responsible for stabilizing gaze during head movement?
The primary motor cortex is associated with which of the following?
The primary motor cortex is associated with which of the following?
Which structure is NOT part of the brain stem?
Which structure is NOT part of the brain stem?
What aspect of muscle control do the medial motor pathways primarily oversee?
What aspect of muscle control do the medial motor pathways primarily oversee?
Which part of the brain is involved in the preparation for and planning of exercise?
Which part of the brain is involved in the preparation for and planning of exercise?
What is a characteristic function of the ascending reticular activating system?
What is a characteristic function of the ascending reticular activating system?
What is the term used to describe the propagation of action potentials in myelinated fibers?
What is the term used to describe the propagation of action potentials in myelinated fibers?
Which phase of the action potential is characterized by the influx of sodium ions?
Which phase of the action potential is characterized by the influx of sodium ions?
How is the length constant defined in relation to electrotonic signals?
How is the length constant defined in relation to electrotonic signals?
What does the threshold refer to in the context of action potentials?
What does the threshold refer to in the context of action potentials?
What kind of receptors are glutamate receptors classified as?
What kind of receptors are glutamate receptors classified as?
What is the characteristic behavior of action potentials described by 'all-or-none'?
What is the characteristic behavior of action potentials described by 'all-or-none'?
What property of the cell membrane is represented by the time constant?
What property of the cell membrane is represented by the time constant?
Which process describes the local response conducted to the trigger zone of the neuron?
Which process describes the local response conducted to the trigger zone of the neuron?
In chemical synapses, what role do neurotransmitters play?
In chemical synapses, what role do neurotransmitters play?
What distinguishes voltage-gated K+ channels from voltage-gated Na+ channels?
What distinguishes voltage-gated K+ channels from voltage-gated Na+ channels?
