ANSWERS:(a) Initiation of heart beat
(b) Regulation of heart beat
(c) Release of acetylcholine only
(d) Release of adrenalin only
EXPLANATION: (b)
(7)
5/5 - (2 votes)
ANSWERS:(a) Initiation of heart beat
(b) Regulation of heart beat
(c) Release of acetylcholine only
(d) Release of adrenalin only
EXPLANATION: (b)
(7)
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