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Biology paper 3 2024 questions 1.1 Describe how stimulation of a Pacinian corpuscle produces a generator potential. [3 marks] - ANS-1. the stretch mediated sodium ions channels in the membrane 2. increase pressure which deforms the sensory neurone lamellae. 3. sodium ion channels open and sodium diffuses in. the inside of the membrane becomes more positive leading to a generator potential 4.4) All new cardiomyocytes produced: Connexin-43, a channel protein that allows electrical impulses ...