Science Bowl Question

W) Prostaglandins [pros-tuh-GLAN-dins] are paracrine [PAR-uh-kruhn] regulators that act locally

X) Insulin is a paracrine regulator that acts over long distances

Y) Melatonin is an endocrine hormone that acts locally [EN-duh-krin]

Z) Prostaglandins are endocrine hormones that act over long distances