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Stack #33641

Heart #2

QuestionAnswer
atria (singular is atrium) sm, thin walled, seperior chambers that recieves blood
atria have ___ on top: auricles; -ear shaped appendages that increase volumn
atria anterior (front) walls are: rough (called pectinate-combed)
fossa ovalis located on: inter atrial septum ,(prior loc of foramen ovale in fetal heart
blood enters RIGHT ATRIUM from: superior vena cava, inferior vena cava & coronary sinus
superior vena cava returns blood from regions above diaphragm
inferior vena cava returns blood from areas below the diaphragm
coronary sinus collects blood draining from the mycocardium
Blood enters LEFT ATRIUM from: 4 pulmonary veins, which transport the blood from lungs back to heart
ventricles called discharging chambers because: release blood into body circulation
which ventricles dominate? left
which chambers are most mass? ventricles
thick muscular walls of ventricles devided by: inter ventricular septum
septum = wall
chordae tendineae (heart strings) are: white collegen cords that anchor valve cusps to the papillary muscles
trabeculae carneae (crossbars of flesh) inferior surface of heart internal wall-irregular ridges of muscle
papillary muscles are cone like: uscle projections that extend into the ventrical cavity and assist in valve junction
Blood leaves the RIGHT Ventricle thru: pulmonary artery
blood leaves LEFT Ventricle thru: aorta (largest of the arteries)
Path of B thru Heart: R RA to RV to PA to lungs then back toheart
two circuits are: pulmonary, systemic
pulmonary: right side is pulmonary circuit pump
systemic left side is systemic pump
lub dub closing of H valves
 

 



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