Term
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Definition
| 45% formed elements, 55% blood plasma |
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Term
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Definition
| 7-8 um diameter, biconcave disc, without nuclei, live 120 days |
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Term
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Definition
| in RBCs; transports most of the oxygen and part of the carbon dioxide in blood |
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Term
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Definition
Made of globin w/ 4 polypeptide chains
ringlike, nonprotein- heme |
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Term
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Definition
releases oxygen which diffuses first into interstitial fluid, then into cells
transports 23% of carbon dioxiode
regulates blood flow and blood pressure |
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Term
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Definition
| eisonphil, basophil, neutrophil |
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Term
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Definition
| lymphocyte (T-cells, B-cells, NK-cells), monocytes (form into macrophages) |
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Term
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Definition
fragment of megakaryocytes enclosed by peice of plasma membrane
form platlet plug in hemostasis
release chemicals that promote vascular spasm and blood clotting |
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Term
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Definition
extrinsic & intrinsic pathways
converts prothombin into the enzyme thrombin |
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Term
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Definition
| converts soluble fibrinogen into insoluble fibrin |
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Term
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Definition
| forms the threads of clots |
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Term
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Definition
have Rh antigen: Rh+
Lack: Rh- |
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Term
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Definition
| anatomical region that extends from the sternum to the vertebral column |
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Term
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Definition
| formed by the tip of the left ventricle |
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Term
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Definition
| posterior surface formed by the atria |
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Term
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Definition
membrane that surrounds and protects the heart;
confines the heart to its posistion in the mediastinum while allowing free movement |
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Term
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Definition
composed of tough, inelastic, dense, irregular, connective tissue;
prevents overstretching of the heart, provides protection, and anchors the heart in the mediastinum |
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Term
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Definition
thinner, more delicate membrane that forms a double layer around the heart
parietal and visceral layers |
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Term
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Definition
| serous pericardium is fused to fibrous pericardium |
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Term
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Definition
=epicardium
layer of the heart wall |
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Term
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Definition
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Term
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Definition
thin, transparent, outer layer of the heart wall
smooth and slippery |
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Term
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Definition
| cardiac muscle tissue, 95% of the heart |
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Term
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Definition
smooth lining for heart chambers
covers heart valves
continuous with endothelial lining of large blood vessels |
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Term
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Definition
| two superior recieving chambers |
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Term
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Definition
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Term
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Definition
| slightly increases the capacity of the atrium |
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Term
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Definition
series of grooves on surface of heart;
contain coronary blood vessels and variable amount of fat |
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Term
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Definition
encircles most of the heart and marks the external boundary between:
superior atria and inferior ventricles |
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Term
| anterior interventricular sulcus |
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Definition
marks the external boundary between:
right and left ventricles |
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Term
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Definition
forms the right border of the heart and recieves blood from:
supior vena cava
inferior vena cava
coronary sinus |
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Term
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Definition
| always returns blood to the heart |
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Term
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Definition
seperates:
right atrium and right ventricle |
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Term
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Definition
| forms most of the anterior surface of the heart |
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Term
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Definition
raised bundles of cariac muscle fibers;
convey part of the conduction system |
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Term
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Definition
tendon-like chords were the tricuspid valve is connected
connected to papillary muscles (=trabeculae carneae) |
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Term
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Definition
| blood pasess from the _____ through the pulmonary valve |
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Term
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Definition
| blood passes from the right ventricle through the ________ into a large artery called the pulmonary trunk |
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Term
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Definition
blood passes from the right ventricle through the pulmonary valve into a large artery called the _______
divides into right and left pulmonary arteries |
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Term
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Definition
| always take blood away from the heart |
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Term
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Definition
| recieves blood from the lungs through four pulmonary veins |
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Term
bicuspid (mitral) valve
(bi=L) |
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Definition
left atrioventricular valve
seperates left atrium from left ventricle |
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Term
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Definition
thickest chamber of heart
forms apex
blood passes from the ______ through the aortic valve |
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Term
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Definition
aortic valve > ascending aorta
some of the blood in the aorta flows into the: |
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Term
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Definition
thin-walled
deliver blood under less pressure into adjacent ventricles |
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Term
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Definition
thicker
pump blood under higher pressure over greater distance |
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Term
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Definition
| works much harder than the right ventricle to maintain the same rate of blood flow |
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