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24 Cards in this Set

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Angiology


the study of the vessels that includes arteries,veins and lymph vessels



Lumen

hollow core which blood flows
Arteries

blood vessel that carries oxygenated blood away from the heart to a body part

3 Coats (Tunica)



1. Tunica Intima


2. Tunica media


3. Tunica adventitia

Tunica Intima/Interna
-inner most upper layer

-composed of endothelium


-lines inner surface of entire cardiovascular system


-comes in contact with blood


Tunica Media

-middle layer


-composed of smooth muscle and elastic fibers


-thickest of the 3 layers


Tunica Adventitia/ externa


-outer layer


- composed of fibrous connective tissue and some elastic tissue


-holds vessel open and prevents tearing

Large sized / elastic arteries

-conduct blood to arteries


-contains more elastic fibers then smooth




ex: aorta / common carotid / brachiocephalic

Medium sized/ muscular / distributing arteries

-distribute blood to various parts of the body


- more smooth then elastic




ex: axillary artery / radial artery / brachial artery

medium sized artery




Vaso-Constriction


make the lumen smaller


DECREASE lumen in size caused by contraction in smooth muscle of the wall by blood vessel

medium sized artery




vaso- dialation

make lumen layer


INCREASE in lumen size caused by relaxation of smooth muscle in wall of blood vessel

Pulmonary trunk carries what kind of blood?
CO2 (deox blood)
Vein facts


-run parallel to arteries


-have tributaries


-have valves


-have 2 sets of veins in the extremities , superficial and deep

Arteriole Facts


-are very small, minute arteries that deliver blood to the capillary


-3 coats



Capillary


microscopic blood vessel carries blood from the arteries to small veins (venukles)



Venules ( venuoles)


small veins that collect blood from the capillaries& drain it into the veins


-3 coats


tunica media - only a few scattered smooth muscle fibers


tunica adventitia - found only in larger venules

Veins

blood vessels that carry blood toward the heart from the body (CO2)
Pulmonary veins


one exception of veins that carry oxygenated blood from lungs to heart




Veins usually only carry CO2

Vasa Vasorum

blood vessels that supply blood
Anastomosis


provides an alternate route for end to end union of vessels


Joining together of blood vessels

Collateral Circulation


circulation of blood through secondary to bypass an obstruction in the main channel




Venae comitantes

vein accompanying an artery

Bifurcation

blood vessel splitting into 2 branches

Trifurcation

splits into 3 branches