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Anatomy Activity 7
Week 7
Question | Answer |
---|---|
Which of the following is not a structural classification of neurons? | polar |
A signal conduction route to and from the central nervous system is a(n) | reflex arc |
This tends to be the longest cytoplasmic projection from a neuron. | axon |
The _____ nervous system is a complex network of nerve pathways embedded in the intestinal wall with a network of integrators and feedback loops that can act somewhat independently. | enteric |
The somatic nervous system carries information to the | skeletal muscles |
Neurons have: | very limited capacity to repair themselves. |
What term describes the bundles of nerve fibers within the central nervous system? | tracts |
Bundles of myelinated fibers make up the | white matter of the nervous system |
Chemical signals diffuse between neurons at this location. | synapse |
The efferent pathways of the autonomic nervous system can be divided into the __________ divisions. | parasympathetic and sympathetic |
The _____ of a neuron is a single process that usually extends from a tapered portion of the cell body. | axon |
Which of these glia cells are located in the peripheral nervous system? | schwann cells |
Nerves that originate from the brain are called _____ nerves. | cranial |
What structure of the Schwann cell is essential to normal nerve growth and the regeneration of injured nerve fibers? | neurilemma |
The structural and functional center of the entire nervous system is the _____ nervous system. | central |
These regions of the neuron direct electrical currents toward the cell body. | dendrite |
The glia cells that help form the blood-brain barrier are the | astrocytes |
This is the site of communication between neurons. | synapse |
Excitable cells that conduct the impulses are called | neurons |
The ________ of a presynaptic neuron associates with the dendrite of a postsynaptic neuron. | axon terminal |