Term
| How do you measure active force at any given muscle length? |
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Definition
| total force during stimulation - passive force (no stimulation)` |
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Term
| buildup of what causes muscle fatigue? |
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Definition
| ADP, P and Mg2+, H+ (from lactic acid) |
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Term
| how does the H+ buildup (from lactic acid) interfere with muscle contraction? |
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Definition
| it competitively binds with troponin receptors |
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Term
| why does rigor mortis occur? |
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Definition
| lack of ATP to break the cross bridge |
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Term
| Nernst Equation (also called reversal potential or eq potential) for positive ions |
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Definition
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Term
| Nernst Equation (also called reversal potential pr eq potential) for neg ions |
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Definition
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Term
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Definition
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Term
| what is reversal potential (not the equation - what does it mean for ion flow) |
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Definition
| its the point at which ion flow will stop and if it goes beyond the point, reverse direction |
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Term
| under what conditions do we use nernst equation? |
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Definition
| if the cell is permeable to only one ion (or we want to know the E of a specific ion in the absence of others) |
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Term
| what does the parallel conductance eq calculate? |
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Definition
| Vrest or resting membrane potential. Remember, when calculating Vrest for changes in ion concentrations, you will need the nerst to calculate the new Eion first. |
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Term
| where do we start measuring latency? |
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Definition
| at the start of the stimulus artifact |
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Term
| equation for biphasic wave form |
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Definition
| pos electrode (placed farther from ground) - neg electrode (placed closer to ground) |
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Term
| conduction velocity absolute method equation |
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Definition
| conduction velocity = D1/ LP1 (or D2/LP2) |
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Term
| conduction velocity difference method equation |
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Definition
| conduction velocity = (D2-D1)/(LP2-LP1) |
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Term
| primary cell type for parathyroid gland |
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Definition
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Term
| what 2 hormones are released by posterior pituitary? |
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Definition
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Term
| Where do we find acidophils, basophils and chromophobes? |
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Definition
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Term
| where do we find herring bodies and putuicytes? |
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Definition
| posterior pituitary gland |
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Term
| where are acinar cells found |
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Definition
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Term
| where are islets of Langerhans found |
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Definition
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Term
| normalized O2 consumption rate |
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Definition
| oxygen consumption rate (Distnace bubble traveled/time in minutes)/wight in g |
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Term
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Definition
| air consumption rate = O2 consumption rate (distance bubble traveled/time in min) / .21 |
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Term
| factors that effect Vrest |
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Definition
ion permeability - the more permeable it is to the ion, the closer to e ion it will get
concentration - whatever the new concentration, the Vrest will move toward the new Eion (how much depends on permeability) |
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Term
| what effect does changees in concentration have on Vrest? |
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Definition
| Vrest moves toward new Eion (how much depends on permeability |
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