Action potential and Na+. It is a fact that Na+ ions cross the membrane and enter the cell during the rising phase of the action potential. The process happens because Na ions channels are open. Then the ions channels becomes inactivated/closed for a while. What happens to the Na+ ions that entered the cell?
Product (mathematics) In mathematics, a product is a number or a quantity obtained by multiplying two or more numbers together. For example: 4 Ã 7 = 28 Here, the number 28 is called the product of 4 and 7. The product of 6 and 4 will be 24, because 6 Ã 4 = 24.
Youâll get a page something like this. Enter your product serial number to get started. Enter your product serial number. And a serial number of your apple product you can find on your invoice (receipt), packaging, the surface of the product or in the Apple software. Check out this page to know how to get the serial number of all apple products.