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23 Cards in this Set
- Front
- Back
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What are glia and neuroglia ? |
Supporting nerve cells of different types. |
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What are axons covered with and what does it do for the nerve? |
Axons are covered with myelin sheath and carries information away from the cell body. |
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What's a synapse? |
A gap between neurons. |
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What is a neurotransmitter? |
A chemical that is released after each action potential from the end of the axon. |
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What is the difference between white matter and gray matter? |
White matter is mainly composed of axons . And gray matter mainly composed of nerve cell bodies and dendrites.
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What is an action potential? |
A nerve impulse. |
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What is polarization? |
Polorization is when a nerve cell is inactive . |
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What is depolarization? |
Depolarization makes the inside of the cell more positive. |
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What is repolarization? |
Repolarization restores the membrane to its original electrical condition. |
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What is the function of the pons? |
A bridge between the cerebellum and the cerebrum. |
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What does the medulla control? |
All involuntary actions. |
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What does the cerebellum control? |
Input of cerebral cortex and sensory receptors. |
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What part of the brain is injured if a person lapse into a coma? |
Midbrain. |
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What is the surface of the cerebrum called? |
The cerebral cortex. |
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What part of the brain controls movement of the skeletal muscles? |
The cerebellum. |
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The right side of the brain controls which side of the body? |
The left side. |
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What are the three meninges and where are they found? |
Dura mater, arachnoid, and Pia matter located in spinal cord. |
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What is the function of CSF? |
Protection and nutrition. |
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What neurons are involved in a reflex arc? |
Sensory, interneuron, and motor. |
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Parkinson's disease? |
Deficiency of the neurotransmitter dopamine. |
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Epilepsy? |
Birth of irregular electrical activity in brain: seizures. |
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Stroke? |
Blood clot in pain. |
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Alzheimer's? |
Cortex shrinks: memory loss. |
