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20 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Nervous system |
System that regulates the body's responses to internal and external stimuli. Consists of the Central NS and Peripheral NS. |
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Neurons |
Nerve cells that provide communication through the brain. |
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Parapalegic |
Two limbs are paralyzed. |
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Quadrapalegic |
4 limbs are paralyzed. |
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Stem cells |
Can turn into any cell |
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Components of a neuron (1) Cell body |
Produces energy for the cell. |
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Components of a neuron (2) Dendrites |
Receives impulses and conducts them to the cell body. |
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Components of a neuron (3) Axon |
Carries messages away from the cell body. |
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Components of a neuron (4) Myelin |
Insulates and protects the axon. |
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Synapse |
The junction between the axon terminals of one neuron and the dendrites of another neuron. |
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Neurotransmitters |
Chemical messenger that carries impulses across the synaptic gap across transmitters. |
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Action potential |
Eleteicak charge that travels down its axon. |
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Reuptake |
The sending neuron reabsorbs the excess neurotransmitters from the synapse. |
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Central NS |
Brain and Spinal cord |
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Spinal cord |
Column of nerves within the spine that transmits messages to and from the brain. |
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Peripheral NS |
Communicates between the central nervous system and all parts of the body. |
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Somatic NS |
Transmits senses to the central nervous system. (Temp and pressure) |
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Autonomic NS |
Regulates the body's vital functions Ex. Heartbeats, breathing, digestion and blood pressure. |
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Sympathetic NS |
Prepares body for action through "flight or fight" syndrome. |
Stress |
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Parasympathetic NS |
Slows organ and gland activity to conserve the body's energy and to refuel the body again. |
Peace |
