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12 Cards in this Set
- Front
- Back
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What is the central nervous system composed of? |
Brain and spinal chord |
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What is the brain composed of? |
the cerebrum (cerebral cortex), cerebellum and brain stem (medulla oblogata and pons) |
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What does the brain give rise to? |
Cranial nerves serving the head and facial region |
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Where is the spinal chord and what does it give rise to? |
Runs down the center of the vertebral column (the neural canal) Gives rise to spinal nerves serving the body trunk and limbs |
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What is the Peripheral nervous system composed of? |
The nerves connecting the brain and spinal chord to the rest of the body |
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Describe cranial nerves |
Originate directly from the brain eg optic nerve, olfactory (smell/taste) nerve, and they serve structures mainly in the head |
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Describe spinal nerves |
Originate from the spinal chord and serve all other regions of the body eg thorax, abdomen, limbs etc |
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What are nervous systems composed of ? |
Nerve cells known as neurones |
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What are the three types of neurones? |
Sensory neurones Motor (effector) neurones Association neurones |
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What do sensory neurones do? |
Carry nerve messages into the CNS |
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What do motor (effector) neurones do? |
Carry nerve impulses to effectors (eg muscles) |
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What do association neurones do? |
Relay messages between sensory and motor neurones |
