Cerebral blood delivery depends on mechanisms such as electrical signaling, which propagates through capillary networks to upstream arterioles to deliver blood, and calcium signaling, which fine-tunes ...

Artificial tissues can mimic muscle, liver, kidney and skin, but they still face a basic survival problem: cells need blood vessels. Without a dense vascular network, oxygen and nutrients cannot ...

The cells lining skin capillaries are constantly sending each other messages—tiny pulses of calcium that help regulate blood flow, sense physical forces and keep vessel walls intact. Scientists have ...

The brain's vascular network, shown in this image, consists of arteries, which penetrate into the brain to feed a vast capillary network, which is then drained by veins. Disclaimer: AAAS and ...