Answer :
The His-Purkinje system is one of the intrinsic pacemakers of the heart, though it generates a heartbeat more slowly than the sinoatrial node. The typical heartbeat range when His-Purkinje cells are pacing the heart is given by:
[tex]$$\text{Lower limit} = 25 \text{ beats per minute}$$[/tex]
[tex]$$\text{Upper limit} = 35 \text{ beats per minute}$$[/tex]
Thus, the heartbeat range is from [tex]$25$[/tex] to [tex]$35$[/tex] beats per minute.
Therefore, the correct answer is:
[tex]$$\textbf{C. } 25\text{-}35 \text{ beats per minute}$$[/tex]
[tex]$$\text{Lower limit} = 25 \text{ beats per minute}$$[/tex]
[tex]$$\text{Upper limit} = 35 \text{ beats per minute}$$[/tex]
Thus, the heartbeat range is from [tex]$25$[/tex] to [tex]$35$[/tex] beats per minute.
Therefore, the correct answer is:
[tex]$$\textbf{C. } 25\text{-}35 \text{ beats per minute}$$[/tex]
