Tissues and Intigmentary Flashcards
Where is nervous tissue located?
- brain
- spinal cord
- nerves
- sensory structures
what is the function of the nervous system
-electrical communication within the body
what are the 2 principle types of cells in nervous tissue
- Neuroglia
- Neurons
What are neurons?
functional and structural units of the nervous system
How do neurons work?
- receive sensory stimuli (light, mechanical, chemical)
- send impulses to muscles, glands, or other neurons
What are the components that make up a neuron?
- cell body
- dendrites
- axon
What does the cell body of a neuron contain?
- nucleus
- other organelles
what is the axon
-long output portion of the cell
What is the function of an axon?
convey electrical impulses away from the cell body
What are dendrites?
- short
- highly branched fibers
What is the function of dendrites?
- reception or input portion of the cell
- convey electrical impulses towards the cell body
Define Neuroglia cells
- Glia means glue
- supporting cells of nervous tissue
- many different types
What is the function of neuroglia cells?
-some speed impulse conduction along axons via production of a myelin covering
