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15 Cards in this Set
- Front
- Back
The Peripheral System consists of interneurons; the brain and spinal cord. True or False?
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False. The Central Nervous system consists of interneurons
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What are Nodes of Ranvier?
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gaps between the schwann cells in the Myelin Sheath that speed up transmission
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Describe the All-or-none theory.
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the neuron either resonds fully or not at all
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What is a synapse?
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the space between a neurons axon and its target
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What is the purpose of Cholinesterase?
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to break down Acetylcholine
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What are the two excitatory chemicals?
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Acetylcholine and Dopamine
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What does a sympathetic nerve do? What do they usually branch from?
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prepare the body for action or emergency (flight or fight response)- mainly branch from spine
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Give one acute effect and one life-threatening affect of Ecstasy.
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acute: heightened perception,or reduced appetite,or elevated mood
life threatening: Hyperthermia, or renal failure,or Arrythmais |
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Give the sequential skills of the left hemispere in the brain.
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speaking,reading,and arithmetic
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How can you correct Myopia?
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a concave lens
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What is a cataract? How can it be corrected?
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cloudiness in the lens that blocks light from entering the retina. Requires surgery to remove lens
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What is a Macula? What is it also known as?
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is filled with only cones and is the region of the retina. It is also called a Fovea Centralis
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What lobe of the brain is respnsible for vision?
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the occipital lobe
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What is Static Equilibrium?
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.(head position)
.the saccule and utricle containa gel filled with otoliths that move when the head is tilted |
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What is the Eustachian Tube?
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a tube that equlizes pressure between the middle ear and the air outside
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