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23 Cards in this Set
- Front
- Back
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Dendrites |
Receive messages from other cells |
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Soma |
The cell's life support center |
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Axon |
Passes messages away from the cells body to other neurons, muscle, or glands
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Terminal Branches |
From junctions with other cells
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Myelin Sheath |
Covers the Axon of some neurons and helps speed neural impulses
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Neural Impulse |
Electrical signal traveling down the axon |
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Seratonin |
-Involved w/ movement, regultion, hunger, sleep, & arousal
-Surplus=None -Deficit=Depression (Clinical) |
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Dopamine |
-Influences movement, learning & emotion -Surplus=Schizophrenia -Deficit= Tremors & Parkinson's |
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Norepinephrine/Adrelanine |
-Helps control alertness & arousal
-Surplus=Anxiety or Insomnia -Deficit=Depressed Mood (Bipolar) |
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GABA (Gamma-AminoButyric Acid) |
-An inhibitory neurotransmitter (stops next neuron from firing) -Surplus=None -Deficit=Seizures & Huntington's (become weaker as you age then die) |
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Acetylcholine (ACh) |
-Excitatory neurotransmitter (contraction of muscle & transmits messages) -Surplus=Migraines & Seizures -Deficit=Alzheimer's |
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Glutamate |
Major excitory neurotransmitter involved in information processing throughout the cortex and memory formation in the hippocampus
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Endorphins |
The brain's pain killer
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Agonist |
Mimics neurotransmitters
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Antagonist |
Blocks neurotransmitters |
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Nervous System |
Consist of all the nerve cells |
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Central Nervous System (CNS) |
The brain and spinal cord
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Peripheral Nervous System (PNS) |
The sensory and motor neurons that connect the CNS to the rest of the body
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Somatic Nervous System |
The division of the PNS that controls the body's skeletal muscle |
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Autonomic Nerevous System |
Part of the PNS that controls the glands and other muscle
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Nerves |
Consist of neural cables containing many axons and they are part of the PNS plus they connect msucles, glands, and sensory organs to CNS |
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Sypathetic Nervous System |
Division of the ANS that arouses energy in stressful situations
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Parasympathetic Nervous System |
Division of the ANS that calms the body, conserving its energy |
