Q. Why doesn't the arteries need valves?
1. Is it because of high pressure . CAN HIGH PRESSURE MAKE THE CELLS MOVE IN FORWARD DIRECTION?
2. So that means that because the cells in the veins dont have much pressure they need valves..
3. But this goes against..this..
" Varicose veins occur when veins are unable to prevent backward flow of blood in places where high blood pressure occurs such as in the feet"
Plz explain while considering my guess.
Thankyou