Podcast
Questions and Answers
What is the primary function of the cytoskeleton in axons?
What is the primary function of the cytoskeleton in axons?
- Rapid axonal transport through motor proteins
- Synthesizing Nissl substance for protein production
- Initiating action potentials at the axon hillock
- Providing structural support to the axon (correct)
What is the term for the trigger zone for initiation of action potentials in a neuron?
What is the term for the trigger zone for initiation of action potentials in a neuron?
- Synaptic terminal
- Axon hillock (correct)
- Dendritic spine
- Nissl body
What is the primary function of kinesin in axonal transport?
What is the primary function of kinesin in axonal transport?
- Retrograde transport of molecules from the synapse to the cell body
- Synthesizing Nissl substance for protein production
- Breaking down neurofilaments for axonal recycling
- Anterograde transport of molecules from the cell body to the synapse (correct)
What is the term for the projection from a neuron's cell body along which action potentials travel?
What is the term for the projection from a neuron's cell body along which action potentials travel?
What is the purpose of neurofilament protein in neurons?
What is the purpose of neurofilament protein in neurons?
What is the characteristic of dendritic spines that is important for neural plasticity?
What is the characteristic of dendritic spines that is important for neural plasticity?
What is the term for the contents of the axon?
What is the term for the contents of the axon?
What is the characteristic of axons that innervate the foot muscles?
What is the characteristic of axons that innervate the foot muscles?
Which type of neuron is characterized by the absence of a true axon?
Which type of neuron is characterized by the absence of a true axon?
What is the primary function of Nissl staining in the context of neurons?
What is the primary function of Nissl staining in the context of neurons?
Which type of neuron is commonly found in the sensory organs of the inner ear?
Which type of neuron is commonly found in the sensory organs of the inner ear?
What is the term for the cell body of a neuron?
What is the term for the cell body of a neuron?
What is the purpose of the slow axonal transport in neurons?
What is the purpose of the slow axonal transport in neurons?
What is the characteristic feature of pseudounipolar neurons?
What is the characteristic feature of pseudounipolar neurons?
Which type of neuron is responsible for transmitting signals from the olfactory epithelium?
Which type of neuron is responsible for transmitting signals from the olfactory epithelium?
What is the term for the aggregates of rough endoplasmic reticulum with bound polysomes found in the cell body and dendrites of neurons?
What is the term for the aggregates of rough endoplasmic reticulum with bound polysomes found in the cell body and dendrites of neurons?
What is the characteristic of axons in terms of branching?
What is the characteristic of axons in terms of branching?
What is the function of collaterals in axons of interneurons and some motor neurons?
What is the function of collaterals in axons of interneurons and some motor neurons?
What is the term for the dilation at the end of each small axonal branch?
What is the term for the dilation at the end of each small axonal branch?
What is the consequence of severing an axon from its cell body?
What is the consequence of severing an axon from its cell body?
What is the direction of movement of molecules during retrograde transport?
What is the direction of movement of molecules during retrograde transport?
What is the rate of anterograde and retrograde transport in axons?
What is the rate of anterograde and retrograde transport in axons?
What is the characteristic of the slower anterograde stream in axons?
What is the characteristic of the slower anterograde stream in axons?
What is the primary component of axoplasm responsible for the dependence of axoplasm on the perikaryon?
What is the primary component of axoplasm responsible for the dependence of axoplasm on the perikaryon?
What is the main function of ATP-dependent Na-K pumps in unstimulated neurons?
What is the main function of ATP-dependent Na-K pumps in unstimulated neurons?
What is the direction of Na+ ion movement during an action potential?
What is the direction of Na+ ion movement during an action potential?
What is the role of glial cells in the extracellular compartment?
What is the role of glial cells in the extracellular compartment?
What is the duration of the cycle of events that occurs during an action potential?
What is the duration of the cycle of events that occurs during an action potential?
What is the change in the resting potential of the axon during an action potential?
What is the change in the resting potential of the axon during an action potential?
What is the purpose of voltage-gated K+ channels in the axolemma?
What is the purpose of voltage-gated K+ channels in the axolemma?
What is the result of depolarization stimulating adjacent portions of the axolemma?
What is the result of depolarization stimulating adjacent portions of the axolemma?
What is the concentration of Na+ ions in the axoplasm compared to the extracellular compartment in unstimulated neurons?
What is the concentration of Na+ ions in the axoplasm compared to the extracellular compartment in unstimulated neurons?
What is the primary function of the myelin sheath?
What is the primary function of the myelin sheath?
Which type of cells are found only in the PNS and form myelin around a portion of only one axon?
Which type of cells are found only in the PNS and form myelin around a portion of only one axon?
What is the characteristic of oligodendrocytes when observed through a routine light microscope?
What is the characteristic of oligodendrocytes when observed through a routine light microscope?
What is the function of the cilia on the apical ends of some ependymal cells?
What is the function of the cilia on the apical ends of some ependymal cells?
What is the characteristic of the white matter in the CNS?
What is the characteristic of the white matter in the CNS?
Which type of cells are the counterparts to oligodendrocytes of the CNS?
Which type of cells are the counterparts to oligodendrocytes of the CNS?
What is the function of the long microvilli on the apical ends of some ependymal cells?
What is the function of the long microvilli on the apical ends of some ependymal cells?
What is the term for the collective layers of cell membrane formed by oligodendrocytes?
What is the term for the collective layers of cell membrane formed by oligodendrocytes?
