Glossary of Ch. 12 Nervous TIssue
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- The central nervous system consists of what?
- Brain and spinal cord
- The Peripheral nervous system concists of what?
- All nervous tissue outside the CNS
- What comprises a nerve?
- 100's - 1,000's of axons plus connective tissues & blood vessels that lie outside the brain
- How many pairs (right & left) of crainal nerves?
- The spinal cord connects to the brain through what?
- The foramen magnum of the skull
- How many pair of spinal nerves?
- What are ganglia?
- Small masses of nervous tissue, containing primarily cell bodies of neurons that are located outside the brain and spinal cord.
- What are enteric plexuses?
- Gastrointestinal tract network of neurons that help regulate the digestive system
- What are sensory receptors?
- Either dendrites of sensory neurons or separate, specialized cells that monitor changes in the internal or external environment
- Name the 3 basic functions of the nervous system.
- Sensory, Integrative & Motor
Sensory receptors detect internal stimuli and external stimuli
- Sensory or afferent neurons do what?
- Carry sensory information from cranial and spinal nerves into the brain
The nervous system includes the brain, cranial nerves, spinal cord, spinal nerves, ganglia enteric plexuses and sensory receptors
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