Blood Vessels

• Vaso Vasorum: small blood vessels that provide oxygen to large blood vessels
• Nervi Vasorum: provide nerve supply to large blood vessels
• Tunica Externa: outer most layer, made of collagen and elastic fibers, anchor vessels in place
• Tunica Media: middle layer, layer of smooth muscle and elastic fibres
• Tunica Intima: inner most layer,
• Lumen: hollow passageway where blood flows
• Arterioles: smaller arteries, lead to capillaries
• Venules: smaller veins