Baroreceptors have stretchsensitive ion channels in their ce

Baroreceptors have stretch-sensitive ion channels in their cell membrane Increased pressure on the membrane opens the channels and allows ion flow that initiates action potentials. What kind of ion probably flows through these channels and in which direction? Explain

Solution

Baroreceptors are stretch-sensitive fibers, their output increases with stretch or increased pressure. Action potential i.e. change in electric potential is created when a cell depolarizes to the threshold. Depolarization results from a net influx of positively charged ions or efflux of negatively charged ions, so the most likely ion is sodium ion. As the membrane potential is increased positively charged sodium ions (Na+) makes entry into the cell.