Calls Can Get Damaged, OR Age And Die. We Wouldn't Be "Us" If We Didn't Have Cells. Hope That Helps
I would say that the parameter or symptom most important for the diagnosis of heat stroke would be the giddiness. Personally, I was kneeling down working in the heat a few years ago at a job and when I stood up I blacked out and fell to the ground helplessly and the first aid attendant figured it may have been due to heat stroke.
Water gets there through xylem and phloem. The xylem bring it to the leaves and the phloem brings it back down