Functional Anatomy Of The Heart Flashcards
What is the pericardial sac
Similar to pleural cavity
Between pericardium and epicardium and contains pericardial fluid
What fully encapsulates allof the heart
Fibrous pericardium
What are the great vessels associated with the heart
Superior and inferior vena cava
Aorta
Pulmonary trunk (left and right pulmonary arteries )
What are the surfaces of the heart
Apex
Anterior
Posterior
Inferior
What is a myocardial infarction
Heart attack
Irreversible necrosis of part of the heart due to blockage of arterial supply
Type either anterior or inferior
What supplies the heart with its own arterial supply
Contrary arteries left and right come off of ascendin aorta
What is the venous drainage of the heart
Through the coronary sinus which drains into the right atrium
What side pumps what type of blood
Right pumps venous and left pumps arterial
What separates the two sides of the heart
Septum
What are the two kinds of chambers
Atria and ventricles
What is the sequences of valves in the heart
From the right atrium to the aorta goes
Tricuspid –> pulmonary –> mitral/bicuspid –> aortic
What is the anatomy of a valve
Can be differnt cuspid tri or bicuspid
Pulled by chordinae tendinae
Which are attached to papillary muscles
How dos the heart conduct a heartbeat
Sinoatrial node in right atrium is the pacemaker
Atriventriclular us back yo and passes on electrical impulse to bundle of His then to right and left bundles to purkinje fibres spreading the impulse through the walls of the ventricles
How does the heart generate a lub dub sound
Lub - first heart sound form closure of tricuspid and bicuspid valves
Dub - second heart sound form closure of pulmonary and aortic valves
What layer surrounds the heart
Epicardium which secretes pericardial fluid
