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28 Cards in this Set
- Front
- Back
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Cardiovascular system |
-Maintain internal environment -Transport hormones -Deliver WBC to infection -regulate temperature |
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Tunica Intima |
-Endothelium, Subendothelium, and internal elastic lamina
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Tunica Media |
-Circularly arranged smooth muscle cells (except elastic artery) -Plays role in blood pressure |
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Tunica Adventitia |
-C.T. collagen and elastic fibers -longitudinal smooth muscle in medium and large veins -vasa Vasorum |
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Large/Elastic/Conducting Artery |
-Aorta and Pulmonary Arteries -Elastic lamina in media -Maintain pressure -vasa vasorum |
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Medium/Muscular/Distributing Artery |
-Branches of large -Large media with smooth muscle -constrict and dilate -IEL and EEL -vasa vasorum |
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Small artery |
-Constrict and dilate -no EEL -3 to 6 layers of smooth muscle |
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Arteriole |
-peripheral regulation of blood pressure -control flow to capillaries -1 to 2 layers of smooth muscle -IEL and EEL absent |
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Arteriosclerosis |
-thickening of intima and hardening of arteries due to aging |
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Atherosclerosis |
-Build up of fats and cholesterol on vessel walls -Foam cells |
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Aneurysm |
-weakened tunica media -Dilation |
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Venules |
-Lymphocyte migration from blood (HEV) -1 endothelial layer and 1 CT layer -Post capillary, collecting, and muscular (increasing size) -Muscular venules accompany arterioles |
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Small veins |
-Larger lumen than venules -more visible smooth muscle |
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Medium veins |
-Adventitia most prominent -contains valves |
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Large Veins |
-Vena cava and pulmonary -Adventitia most prominent -vasa vasorum -Smooth muscle in tunica media contracts to push blood along |
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Varicose veins |
-Deficient valves -genetics, posture, pregnancy, obesity
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Continuous Capillary |
-smooth muscle, CT -No pores = limited permeability -nervous, lungs, exorcine glands, thymus |
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Fenestrated capillary |
-Endothelia has pores and diaphragms (except glomerulus); Basal lamina continuous -intestines, glomerulus, endocrine glands |
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Discontinuous/sinusoidal capillary |
-Endothelium has large pores ; no basal lamina -Greater diameter -Liver, spleen, marrow, lymph nodes |
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metarterioles |
Discontinuous smooth muscle vessels that branch from arterioles to capillaries |
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Arteriovenous anastomosis |
Artery directly to vein to regulate blood volume around capillaries |
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Portal system |
Double capillary separated by artery or vein |
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Endothelium |
-Permeability barrier -WBC traverse -angiogenesis occurs -anticoagulant
-Endothelin - constrict -NO2 and prostacyclin - ddilate |
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Endocardium |
-Endothelium, Subendothelium (CT), Subendocardium (Purkinje fibers located) |
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Myocardium |
-Thickest -cardiac muscle
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Epicardium |
-Visceral pericardium -Mesothelium -thick CT (coronary vessels, nerves, adipose located) |
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Heart valves |
-Fold of endocardium -Encloses dense CT |
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Lymphatic vascular |
-not in CNS, marrow, hard tissue
-small- large lumen, thin walls, endothelium, CT, smooth muscle cells
-large- thicker wall, Smooth muscle contracts to move lymph, similar to small veins but have valves |
