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11 Cards in this Set
- Front
- Back
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Explain the resting membrane potential
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Sodium outside and
Potassium inside set up a -70 mV potential difference at the membrane |
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Describe an action potential.
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The threshold for depolarization at a spot on the cell membrane(reaches the lower threshold voltage Usually around -55 mV)
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What is an EPSP/IPSP?
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EPSP: Excitatory Post-Synaptic Potential
IPSP: Inhibitory Post –Synaptic Potential |
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What are the major divisions of the nervous system?
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CNS, PNS
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How do sympathetic and parasympathetic systems differ?
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Parasympathetic---rest and recovery
Sympathetic---Action. (Swing or sprint) fight or flight |
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Differentiate between a hormone and a neurotransmitter.
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Hormone is a chemical messenger released into the blood designed "to set in motion" a process.
Neurotransmitters are chemicals that are used to relay electrical signals between a neuron and another cell. Produced within the presynaptic neuron |
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What is the major difference between a steroid and peptide hormone?
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Steroids are lipid solable and steroid hormones are generally synthesized from cholesterol in the gonads and adrenal glands.
Peptide hormones are a class of peptides that are secreted into the blood stream and have endocrine functions. Receptor dependent. |
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Which hormones are released during exercise to increase blood glucose?
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Glucagon
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Which hormone can be considered catabolic?
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catabolic hormones- cortisol, glucagon, epinephrine
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What effect does exercise training have on hormone release
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Increased
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What is required before an action potential is fired
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You must reduce the charge across the plasma membrane.
Certain neurotransmitters or mechanical stimuli (e.g., acetylcholine)will open ligand-gated sodium channels. Usually around -55 mV. |
