(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
Generate electrical impulses
AV node
No
Sodium influx
Right atrium
A burst of electricity
Potassium leaves
Potassium leaves slightly
70–100
Ca²⁺ in, K⁺ out
Sodium (Na⁺)
Sodium-potassium pumps
The atria contract
Pump blood
Natural Pacemaker
Action potentials
Specialized pacemaker cells
A battery
Calcium influx
SA node → AV node → Bundle of His → Purkinje fibers