(Print) Use this randomly generated list as your call list when playing the game. There is no need to say the BINGO column name. Place some kind of mark (like an X, a checkmark, a dot, tally mark, etc) on each cell as you announce it, to keep track. You can also cut out each item, place them in a bag and pull words from the bag.
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Tells cells when to contract and relax
A battery
Generate electrical impulses
No
Specialized pacemaker cells
Right atrium
Engines
Potassium leaves
Natural Pacemaker
Sodium-potassium pumps
Sodium (Na⁺)
Pump blood
Signals from the conduction system
The atria contract
Voltage remains steady
AV node
Sodium influx
A burst of electricity
70–100
Action potentials
Potassium leaves slightly
Calcium influx
Ca²⁺ in, K⁺ out
SA node → AV node → Bundle of His → Purkinje fibers