18 Questions
What is the term used to describe the functional connection between a neuron and a second cell?
Synapse
In the Central Nervous System (CNS), what type of cell is the second cell connected to a neuron at a synapse?
Neuron
What are the three types of synapses based on the location of connection between neurons?
Axodendritic, Axosomatic, Axoaxonic
What term describes the event involving changes in Na+ and K+ diffusion leading to changes in membrane potential, known as nerve impulse?
Action potential
What is the term for the release of neurotransmitter molecules from the presynaptic axon terminals?
Neurotransmitter release
What is the specific receptor protein that neurotransmitters bind to on the postsynaptic membrane?
Ligand-gated receptor proteins
What is the role of astrocytes in the CNS?
Formation of synapses
How are molecules within brain capillaries moved through the endothelial cells?
Diffusion, active transport, endocytosis, exocytosis
What type of junctions join brain capillaries together?
Tight junctions
What is the event called when there is a flow of ions resulting in changes in membrane potential?
Action potential
What is the resting membrane potential (rmp) of neurons typically?
-70 mV
What process is seen as a line deflecting upward from the resting membrane potential?
Depolarization
What are the three main components of a neuron?
Cell body, dendrites, axon
How are dendrites and axons commonly referred to?
Processes or extensions
What are the three main types of neurons based on function?
Sensory (afferent), Motor (efferent), Interneurons (Association)
What are the two main types of neurons based on structure of their processes?
Pseudo unipolar, Bipolar neurons
What are the two main divisions of the nervous system?
Central nervous system (CNS) and Peripheral nervous system (PNS)
What is the role of supporting cells in the nervous system?
Supporting cells assist the functions of neurons.
Test your knowledge about ion channels and action potentials in physiology. Learn how the opening and closing of ion channels affect the permeability of the plasma membrane and lead to the generation of action potentials.
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