mother

Liz Norden, a mother of five, had just finished hauling groceries into her Wakefield home Monday afternoon when her cellphone rang.

“Ma, I’m hurt real bad,” said her 31-year-old son. He was in an ambulance, he told her, being rushed to Beth ­Israel Deaconess Medical Center.

It was her second boy, who had gone with his older brother to watch a friend run in the Boston Marathon.

On the phone, her son said his legs were badly burned in an explosion. His brother had been next to him, but he didn’t know where he was.