Anatomy and Cell Biology 2221 Lecture Notes - Lecture 7: Superior Vena Cava, Mitral Valve, Lymphatic Vessel
9 Dec 2016
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Apex between ribs 5 and 6 at midclavicular line. Surfaces four corners defined by points profected onto anterior thoracic wall. Fibrous pericardium: outer layer, dense irregular connective tissue, tough, inelastic, anchors heart, keeps it from overfilling with blood. Receives de-oxygenated blood from: superior vena cava, coronary sinus, inferior vena cava. Discharged blood into left ventricle through bicuspid valve (mitral) Svc/ivc ra tricuspid valve rv av valve pulmonary trunk lungs pulmonary veins la bicuspid vlve lv av valve aorta body. Drains excess interstitial fluid: collects fluid form between tissues/cells and returns it to the blood. Transports dietary lipids: transports lipids and lipid-soluble vitamins (a,d,e,k) from intestines to blood. Carries out immune responses: initiates responses directed against pathogens. Lymph vessels begin at capillaries, blind ended pouch. Vessels unite to form lymph trunks: lumbar (lower limbs, pelvis, intestinal (abdomen, bronchomediastinal (thorax, lungs, heart, subclavian (pper limb, jugular (head and neck) Trunks drain into two main ducts: thoracic and right lymphatic duct.
