The diagram shows a cross-section of the spinal cord and the nervous pathway involved in a simple withdrawal reflex.
Which sequence correctly represents the chronological order of transmission of an action potential through these numbered structures during this reflex action?
1→3→2→4→5→6→71 \rightarrow 3 \rightarrow 2 \rightarrow 4 \rightarrow 5 \rightarrow 6 \rightarrow 71→3→2→4→5→6→7
1→2→3→4→5→6→71 \rightarrow 2 \rightarrow 3 \rightarrow 4 \rightarrow 5 \rightarrow 6 \rightarrow 71→2→3→4→5→6→7
1→2…5→4→3→6→71 \rightarrow 2 \dots 5 \rightarrow 4 \rightarrow 3 \rightarrow 6 \rightarrow 71→2…5→4→3→6→7
1→5→6→4→3→2→71 \rightarrow 5 \rightarrow 6 \rightarrow 4 \rightarrow 3 \rightarrow 2 \rightarrow 71→5→6→4→3→2→7