<prompt> False about funny current channel in heaIt is a Na-K ATPase pumpThey are responsible for diastolic depolarizationIt is responsible for spontaneous rhythm producing tissue of heaThey are voltage dependent channel only  <response>: Funny leaky Na channels: - Hyperpolarization activated cyclin nucleotide gated HCN channels. More the hyperpolarization more the activation Equally permeable for Na K After repolarization occur by K exit in pacemaker cells, next depolarization spontaneously reaches threshold, major pa in this spontaneous depolarization is by Na funny channel. 