click below
click below
Normal Size Small Size show me how
Stack #33641
Heart #2
| Question | Answer |
|---|---|
| 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 |