15 Questions
What is the main driving force for the diffusion of ions through ion channels?
Concentration gradient
What process actively pumps out sodium from the cell?
Sodium-potassium pump
What occurs during depolarization of the cell membrane?
Cations going in
What happens when the threshold is met at the axon hillock?
Voltage gated Na+ channels open up and sodium enters the cell
How is information encoded by the nervous system?
Changes in pattern frequency
What is behavior defined as in the context of the nervous system?
The actions/reactions/responses
What are the two main types of cells within the brain?
Neurons and Glia
What is the function of an oligodendrocyte or Schwann cell?
Speed up signal transmission with the myelin sheath
What is the main function of an interneuron in the nervous system?
Transmit information between neurons within the CNS and coordinate outputs
What is the primary function of astrocytes in the nervous system?
Mechanical and metabolic support
Which type of neuron has multiple dendrites and a single neuron?
Multipolar neuron
What is the function of microglia in the nervous system?
Phagocytosis
What is the role of satellite cells in the nervous system?
Support groups of cell bodies of neurons within ganglia of the PNS
What is the main function of neurilemma?
Potential regeneration of damaged axons
What is one major difference between sensory afferent neurons and association interneurons?
Sensory afferent neurons transmit information from receptors of PNS towards CNS while association interneurons transmit information between neurons within CNS
Test your knowledge about neurons, the nervous system, and the key theories and concepts related to neural tissue. Explore topics such as the neuron doctrine, types of cells in the nervous system, and the functions of neurons and glia.
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