Week 4 Day 3

CO2 + H2O →H+ + HCO3- system has NaOH H+ + HCO3- +NaOH → H2O + NaHCO3 system has Ca(OH)2 NaHCO3 + Ca(OH)2 → NaOH + CaCO3 + H2O *when CaCO3 is consumed, pH is acidic

It has two metal pieces that expand and shring with temp changes, moving a thing that allows varying amounts of O2 through, controlling how much O2 goes by the gas. *increased temp Increases VP which allows the O2 going by the gas to pick up more gas

when a large volume of N2O is taken into bloodstream faster than the other gases, the concentration of the remaining gases increases

smaller current than 0.1 mA is needed to cause V-fib

shuts off electrical current when it senses it going along the incorrect path *it senses a different current coming in then went out

• ungrounded electrical service • requires two line to ground faults to affect function of equipment or shock anybody

continually checking for leakage current from each phase conductor *this is the third year med student

used to calculate cell potential Veq = (61/Z) * log (Kout/Kin) mV

the difference in electric potential between the inside and outside of a cell

the interior voltage of a cell becoming less negative

the interior of a cell becoming more negative

when the membrane potential of a cell rapidly rises and falls *for an action potential to happen, the membrane potential must depolarize to the critical threshold

primary pacemaker of the heart

• Trigger raises membrane potential over threshold • Na+ channels open, Na comes in, membrane potential rises • Na channels close, K channels open • K leaves cells, membrane potential falls, below resting • K channels close, leaving only “leak” channels

• resting membrane potential at -90 mV • depolarize only when stimulated, usually by neighboring myosite.