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33 Cards in this Set
- Front
- Back
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Q. Cardiovascular System:
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The heart, blood vessels
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Q. Lymph Vascular System:
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A system of vessels found throughout most of the body. It drains its contents into large veins of the cardiovascular system.
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Q. Cardiovascular Circuits consist of:
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arteries, capillaries, veins, arteriovenous shunts (anastomoses)
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Q. Arteries Three Tunics:
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Tunica Intima, Tunica Media, Tunica Adventitia
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Q. Tunica Intima:
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endothelium on a basal lamina and underlying connective tissue
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Q. Tunica Media:
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a muscular layer with some connective tissue fibers
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Q. Tunica Adventitia:
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an outermost coat of mostly loose connective tissue
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Q. Arterial 3 main vessels:
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Elastic Arteries, Muscular Arteries, Arterioles
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Q. Elastic Artery:
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the aorta, innominate artery, common carotid artery, subclavian & most pulmonary arterial vessels
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Q. Muscular Arteries:
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the main distributing branches, e.g. the radial, femoral, and cerebral arteries
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Q. Arterioles:
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terminal branches which supply the capillaries
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Q. Cappillaries:
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Sporadic fusion of endocytotic pits and vesicles of adjacent endothelial cells produce transient transcellular channels which allow exchange of large molecules between plasma & tissue fluid.
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Q. Capillaries in most of the body:
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endothelial cells are interconnected by fascia occludens (weak barrier against fluid).
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Q. Capillaries In most of the brain:
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endothelial cells are interconnected by zonula occludens (strong barrier against fluid.
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Q. Pericytes may give rise to:
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fibroblasts and smooth muscle cells. Included in a basil lamina
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Q. Structure of Capillaries:
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Capillaries may be continuous or fenestrated(holes in them); however, most are continuous
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Q. Structure of Capillaries In kidney:
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there is fenestrated cavities but it’s one big whole.
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Q. Sinusoid:
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Sinusoids are thin-walled, capillary-like venous blood vessels with an unusually wide lumen and an associated population of macrophages.
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Q. Sinusoids are found:
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myeloid tissue, the spleen, and the liver
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Q. Venous System:
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Postcapillary venules, Medium-sized veins, Large veins
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Q. Postcapillary venules:
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appear similar to capillaries, a thin endothelium surrounded by reticular fibers & pericytes
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Q. Large veins:
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Most large veins, except major vessels lack a tunica media. They have a thick subendothelial layer and t. adventitia
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Q. Lymphatic Systems:
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This is considered a separate part of the circulatory system. Its role is to withdraw excess tissue fluid from the intercellular fluid compartment, filter this through lymph nodes and return it to the blood.
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Q. Lymphatic capillaries:
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One end of lymphatic capillaries ends blindly (open circuit) take fluid to the veins. Fine extracellular matrix fibers hold the vessels open in the face of edema.
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Q. Lymphatic vessels:
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They resemble small or medium-sized veins.
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Q. Heart three layers
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myocardium, endocardium, pericardium
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Q. Endocardium
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It lines the chambers of the heart, covers its various one-way valves, and is in continuity with the tunica intima of vessels entering or leaving the heart.
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Q. Myocardium:
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middle layer of uniquely constructed and arranged muscle cells that forms the bulk of the heart wall
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Q. Pericardium
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the fibroserous sac enclosing the heart and the roots of the great vessels
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Q. Sinoatrial nodes:
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sends fibers throughout atrioventricular which makes the atrioventricular contract.
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Q. Atrioventricular bundle:
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consists of specialized cardiac muscle fibers that enter the interventricular septum, branch and become Purkinje fibers
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Q. Purkinje Fibers:
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They lie in the deepest layer of the endocardium. They have a pale wide central core around the nucleus that contains much glycogen.
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Q. Cardiac Valves
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The heart valve leaflet is an intimal sheet with a core of dense irregular connective tissue that is mostly avascular
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