Cardiovascular | Tunic Layers & Types of Capillaries

Official Ninja Nerd Website: https://ninjanerd.org Ninja Nerds! In this cardiovascular physiology lecture, Professor Zach Murphy breaks down the tunic layers of blood vessels and the three major types of capillaries, providing a structural and functional perspective essential for mastering vascular physiology and pathology. We begin by examining the three tunics that make up the walls of most blood vessels: the tunica intima, tunica media, and tunica externa (adventitia). You’ll learn how each layer contributes to vessel strength, elasticity, contractility, and resistance—and how their composition varies between arteries, veins, and arterioles. Next, we explore the three types of capillaries—continuous, fenestrated, and sinusoidal—and their unique roles in tissue-specific permeability. Zach walks you through where each type is found, how they function in fluid and solute exchange, and what makes them suited to specialized organs like the brain, kidneys, intestines, and liver. Enjoy the lecture and support us below! 🌐 Official Links Website: https://www.ninjanerd.org Podcast: https://podcast.ninjanerd.org Store: https://merch.ninjanerd.org 📱 Social Media   / ninjanerdlectures     / ninjanerdlectures     / ninjanerdlectures   https://x.com/ninjanerdsci/   / ninja-nerd   💬 Join Our Community Discord:   / discord   #ninjanerd #typesofcapillaries #tuniclayers