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What cells support, protect, insulate, and nourish neurons?
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What is a bundle of fibers containing neurons and blood vessels?
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Flo's Nervous System
Structure & Function, Brain, Spinal Cord, PNS, ANS
| Question | Answer |
|---|---|
| What cells support, protect, insulate, and nourish neurons? | Glial Cells |
| What is a bundle of fibers containing neurons and blood vessels? | Nerve |
| What is the supporting structure of nerve tissue, located in the CNS, including phagocytic cells? | Neuroglia |
| What functional unit of a nerve sends and receives nerve impulses? | Neuron |
| What is the part of the neuron attached to a cell body that carries impulses to other neurons and body tissue? | Axon |
| What is the main part of the nerve cell? | Cell Body |
| Name the part of the neuron resembling tree branches that receives nerve impulses toward the cell body? | Dendrite |
| What is a group of neuron cell bodies along the path of a nerve outside the CNS? | Ganglion |
| What are neurons in the brain and spinal cord that conduct nerve impulses between afferent and efferent neurons? | Integrative Neurons |
| Name the neurons that transmit nerve impulses from the CNS to muscles and glands? | Efferent Neurons |
| What is the covering of an axon that has a whitish appearance? | Myelin Sheath |
| Name a bundle of axons. | Nerve Fibers |
| Covered with myelin sheath, as over nerve fibers, and appearing as white matter. | Myelinated |
| What is a continuous plasma membrane around myelin sheath? | Neurilemma |
| Name the neurons that transmit nerve impulses to the CNS from within and outside the body. | Afferent Neurons |
| What are spaces where myelin sheath does not touch itself externally? | Nodes of Ranvier |
| What is another name for integrative neurons? | Interneurons |
| What is another name for efferent neurons? | Motor Neurons |
| What is another name for afferent neurons? | Sensory Neurons |
| What is sheath? | A Covering |
| What are star-shaped nerve cells that hold blood vessels closer to nerve cells and serve as a barrier to transport water and salts between nerve cells and capillaries? | Astrocytes |
| What are nerve cells that line the brain and central cavity of the spinal cord to serve as a barrier between CSF and tissue fluid? | Epindymal Cells |
| What are nerve cells that engulf cellular waste and destroy microorganisms in nerve tissue; special macrophages to protect CNS? | Microglia Cells |
| Name the nerve cells that produce and maintain myelin sheath. | Oligodendroglia Cells |
| Name the surface area of the body where afferent fibers travel from a spinal root. | Dermatome |
| What is an electrical signal that begins when a stimulus is received? | Nerve Impulse |
| What are chemical substances that cause a nerve impulse to cross synapses? | Neurotransmitters |
| What is a sensory nerve ending? | Receptor |
| What is a change in the environment of a nerve cell; causes action. | Stimulus |
| Name the space between the end of one neuron and the beginning of the next neuron. | Synapse |
Created by:
crdb04
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