Heart and Arteries Flashcards
(68 cards)
space in the medial thoracic cavity between the two pleural cavities in which the heart and othe organs are located

mediastinum
outer, dense connective tissue layer of the pericardum

fiberous pericardium
protective sac that encloses the heart

parietal pericardium
space between the pariatal pericardium and the visceral pericardium (epicardium), contains lubricating fluid

pericardial cavity
the outer covering of the heart

epicardium (viseral pericarium)
the muscle layer of the heart, causes the heart to contract

myocardium
the innermost lining of the heart
endocardium
membrane that partitions the two atria

interatrial septum
myocardial tissue that partitions the two ventricles

interventricular septum
inferior pointed portion of the heart

apex
recives blood from head and upper body and drains into the right atrium

superior vena cava
recives blood from the legs and trunk and drains into the right atrium

inferior vena cava
return deoxygenated blood from myocardium to coronary sinus
coronary vein
large vessle on the left posterior heart between atria and ventricle, recives venous blood from the coranary veins and drains into the right atrium

coranary sinus
superior chamber of the heart that recives blood form the venae cavae and coranary sinus

right atrium
anterior part of the atrium, flap like extension

right auricle
(ear shaped)
muscular ridges within both aricles and anterior walls of the atria

pectinate
located between the right atrium and right ventricle, prevents backflow into the right atrium during ventricular contraction

right atrioventricular (tricuspid) valve
right inferior chamber of the heart, sends blood to the pulmonary trunk

right ventricle
ridges of muscle in the endocardium of the ventricles

trabeculae carneae
small muscle that fastens to the chordae tendineae to the ventricular wall

papillary muscle
strands of connective tissue that hold the valves in position while the heart is contracting

chordeae tendineae
prevents backflow of the blood from the pumonary trunk to the right ventricle during ventricular relaxation

pulmonary valve
large vessle on the anterior superior portion of the heart that recives blood from the right ventricle and directs it to the lungs via the pulmonary arteries

pulmonary trunk











































