....for I am fearfully and wonderfully made:
Psalm 139:14
"If you were to lay out all of the arteries, capillaries and veins in one adult, end-to-end, they would stretch about 60,000 miles (100,000 kilometers). What's more, the capillaries, which are the smallest of the blood vessels, would make up about 80 percent of this length.By comparison, the circumference of the Earth is about 25,000 miles. That means a person's blood vessels could wrap around the planet approximately 2.5 times!" LiveScience
Do ya really think that system 'evolved'? BTW, if you need the whole system, how could creatures survive before this was fully 'evolved'?