Calcium-activated transient membrane currents are carried mainly by chloride ions in isolated atrial, ventricular and Purkinje cells of rabbit heart

This article aims to show how the period now known as adolescence came into being and how it was shaped by international economic, institutional, and social influences. It considers premodern societies and argues that traditional culture has shaped contemporary adolescence even more than has global society. Explanations are offered for the enormous differences across the world in adolescent sexuality, reproduction, and marriage. The data are drawn mainly from research programs in Nigeria, Sri Lanka, India, and Bangladesh, and comparisons are made with other countries.