Vascular Flashcards
(25 cards)
Name the blood supply of Aorta & large Arteries that found in Tunica Adventia :
Vasa Vasroum
Name the innermost layer of blood vessels close to lumen ;
-Endothelium (simple squamous epithelium) based on basal lamina
-Sundendothelial layer of loose connective tissue
-Internal elastic lamina of Fenestrated layer of elastic fibers
Tunica intima
Name the middle muscular of coat of blood vessels ;
-has Circular smooth muscles
-Elastic & Collagen fibers in between muscle layer
-External elastic lamina maybe present
Tunica Media
Name the outermost coat that consists of Connective tissue with few elastic & collagen fibers & Vasa vosroum :
Tunica Adventia
Thick Tunica media (forms most of aorta wall) of the Aorta (large arteries) consits of :
-Fenestrated elastic laminae
-Circular smooth muscle fiber
Tunica adventia (thinnest layer) of aorta (large arteries) contains blood supply called :
Vasa vasroum
Elastic fibers enables conducting arteries to stretch & takes much Blood Ejected from heart during :
Ventricular contraction
Muscular (medium) arteries has thin intima lined with endothelium & Subendothelial layer is thin with wavy layer of fenestrated :
Internal elastic lamina
Medium sized Veins has Thin walls, intima & media but have Thick adventia & poorly developed :
Internal Elastic lamina & Subdendothelial layer in intima
Medium sized Vein has tunica Media contains Circular smooth muscle fibers & few :
Elastic & Collagen fibers
Tunica Intima of medium sized veins has Folds (or replication) forming :
Valves
Veins has numerous One-way valves to prevent :
Blood back flow
Muscular (medium) arteries has thick media with muscles & few collagen & elastic fibers ; the outer border of media is marked by :
Clear layer of external elastic lamina
Name the layer of Medium (muscular) that thick but thinner than media is supplied by vasa vasroum, lymphatic & nerves , has some collagen & few elastic fibers :
Tunica adventia of arteries
The muscular medium sized arteries have walls of smooth muscle fibers & some collagen & elastic fibers, their role is to :
Distribute blood to body parts
(also regulate blood flow by contraction or relaxation of walls)
Name the blood vessel that have diameter of 100 um or less, with thick wall :
Arteriole
Name the blood vessel that intermediate between arterioles & capillaries & wider than capillaries but less than 40 um in diameter :
Metarterioles (arterial capillaries)
Capillaries, metarterioles , sinusoids & A-V shunts opens into slightly wider that walled vessels called :
Venules
Name the small thin-walled blood vessels with luminal diameter of 8-10 um (slightly wider than RBC) :
Capillaries
Name the blood vessel that is in certain locations in body (as finger & toe tips, face, liver, thyroid, placenta)
blood can pass directly from arteriole to venule without passing through capillary bed A-V shunts or :
Arteriovenous Anastomoses
The wall of capillary is composed of a single layer of endothelial cells resting on a basal lamina because Capillaries have no smooth muscle in their walls so they can’t contract but Basal Lamina splits to enclose :
Pericytes (myoepithelial cell)
Capillary beds are found in almost every body tissue & they’re the sites for exchange of :
Carbon dioxide, Oxygen, Nutrients, Waste products & Hormones between blood & body cells
Name the heart layer that lines the heart chambers & valves ; formed of Endothelial of simple squamous epithelium, Thin layer of basal lamina & Subendothelial layer of Loose connective tissue with few elastic fibers :
inner Endocardium
Name the Thickest layer of heart, the contractile cardiac muscle fibers are joined end to end at intercalated discs, Impulse conducting system is formed of specialized non-contractile cardiac muscle fibers which can generate nerve impulses :
middle Myocardium
