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Sectopm 13.3

Teacher: Mr Headlee
Across
Where heart rate is controlled
A term which describes the way in which cardiac muscle fibers function in relation to one another
Initiates the cardiac impulse
Receptors that sense blood pressure in the arteries
An important ion affecting heart contraction
A record
Down
Just relax
High pressure
Sound of AV valves closing
Conducts the cardiac impulse to the ventricular walls