Term
| smooth muscle vs. skeletal muscle |
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Definition
| smooth muscle is NOT striated, actin and myosina re dispersed randomly; not organized into myofibrils or sarcomeres, poor SR, NO troponin, excitation-contraction coupling is different |
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Term
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Definition
| spontaneous gradual depolarization that leads to AP, cyclical changes in membrane permeability to ions, autonomic NS or hormones alter slope of pacemaker |
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Term
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Definition
| is spontaneous, wave of depolarization and repolarization, input from autonomic fibers or hormones brings on an AP, commonly seen in the gastrointestinal tract |
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Term
| partial pressure gradient |
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Definition
| between alveolar air and pulmonary blood set the PO2 and PCO2 for arteriol blood |
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Term
| At alveoli, O2 poor blood and O2 rich blood is at what mmHg? |
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Definition
| poor- 40mmHg, and rich- 100mmHg |
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Term
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Definition
| little change in %Hb saturation; safety plateau will give you almost 100% saturation every time |
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Term
| steep slope in regards to Hb saturation |
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Definition
| results in sensitivity to small changes in tissue PO2 |
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Term
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Definition
| decreasing the affinity will increase the O2 delivery |
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Term
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Definition
| down its conc. gradient out of the cells into the interstitial fluid and into the plasma |
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Term
| in lungs how does CO2 diffuse? |
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Definition
| CO2 diffuses down PCO2 gradient and out of the plasma into alveolar air; excretion of CO2 |
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Term
| 23% of Hb dissolves into blood |
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Definition
| one out of the three ways we will have to remember |
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Term
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Definition
| does NOT bind to heme group |
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Term
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Definition
| an enzyme that is abundant in RBC, catalyzes in both directions |
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