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30 Cards in this Set
- Front
- Back
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heart layers
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endocardium, myocardium, epicardium
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endocardium
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inner layer + basement membrane
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myocardium
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cardiac myocytes + fibrocytes
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epicardium
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superficial layer, epicardium + visceral pericardium
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visceral pericardium
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simple squamous mesothelium
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cardiac muscle
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striated, intercalated discs, branching, central nuclei
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purkinje fibers
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large, clear, in heart skeleton + interventricular septum
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bundle of his
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atrioventricular bundles of purkinje fibers
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skeleton of heart
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fibrous and fibrocartilage, in base of valve leaflets, base of aorta and pulmonary artery
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chordae tendineae
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attach valves to papillary muscles
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arteries classified by appearance
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elastic, muscular, arterioles, capillaries
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arterioles
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<10 layers of smooth muscle cells
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capillaries
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1 cell layer of endothelium
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vasa vasorum
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small vessels feeding cardiovascular system
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veins
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tunica media modest/absent, tunica intima folded to form valves
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pericytes
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form capillaries, have contractile potential and support function
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types of capillaries
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continuous, sinusoidal, fenestrated, porous
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continuous capillaries
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most places, tight junctions
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sinusoid capillaries
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liver, BM, endocrine, discontinuous
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fenestrated capillaries
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gut, still have membrane covering
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porous capillaries
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kidneys
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lymph vessels
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thin walled, valves, blind ended, lack basement membrane and pericytes
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lymph organs
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nodes, tonsils, spleen, thymus
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lymph nodes
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capsules- connective and smooth muscle tissue with cortex and medulla
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lymph cells
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leukocytes (B, T, plasma cells, monocytes), reticular cells (fibroblasts)
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spleen function
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red cell and iron metabolism, immune
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spleen pulp
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red pulp rich in RBCs, white pulp lymphoid nodules
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thymus
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mediastinal organ with follicular structures and epithelio-reticular vessels
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follicular structure
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capsule with septa, cortex (T lymphocytes) and medulla (larger lymphocytes)
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epithelio-reticular vessels
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secrete thymic hormones, form blood-thymus barrier
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