Question | Answer |
the heart, which is frequently nicknamed a muscular pump, has how many layers? | Three layers |
the heart has how many chambers? | For |
the outer layer of the heart is termed | the epicardium |
the middle layer of the heart is termed the | myocardium |
the inner lining of the heart is termed the | endocardium |
what is the name of the serous membrane sac which encloses the heart? | Pericardium |
the right and left sides of the heart are divided by the muscular wall turn to be | interventricular septum |
the upper chambers of the heart are termed the | atria which are smaller and thinner walled in the lower chambers, the ventricles |
the AV valves separate the atria from the ventricles which valve separates the right atrium from the right ventricle? | Tricuspid valve |
connected to the AV valves are v? | Chordae tendineae, the string like structures which are then attached to |
what are the chordae tendineae attached to and what do they do? | The papillary muscles, which control the movement of the valves |
great the whole the responsible for the transportation of blood in and out of the heart which vessel carries blood from the system to the right atrium? | The v neck avis inferior v neck eva and superior v neck eva |
the pulmonary artery carries blood from where and to where? | From the right ventricle to the lungs |
the pulmonary veins carry blood from the lungs to the | left atrium |
lastly, the what keri what carries blood from the left ventricle to the body tissues? | The aorta |
what is considered the pacemaker of the heart and is responsible for | the sinoatrial node |
where is the sinoatrial node located? | The right atrium |
what is the second area of the heart to relay the impulse? | what is the second area of the heart to relay the impulse? The AV node |
what relays the impulse after the AV node | bundle of His, bundle branches, Purkinje fibers |
the term used to represent the positivity is the heart leading to contraction is | depolarization |
what is the term used to represent the negativity or resting state of the heart? | Repolarization |
the first heart sound is caused by closure of the | tricuspid mitral valves |
the second sound second heart sound is caused by the closure of the | pulmonary artery & aortic valve |
abnormal heart sounds are termed | heart murmur |