Exam 1 Flashcards
What level is the base of the heart located?
2nd rib
What level is the apex of the heart located?
5th ICS/MCL
What is the outer wall of the pericardium known as?
Fibrous Pericardium
What is the function of the fibrous pericardium?
anchors heart to chest wall and diaphragm
What is the inner wall of the pericardium known as?
Serous Pericardium
What 2 layers consist of the Serous pericardium?
Parietal and Visceral
What condition is known as infection and fluid build up in the pericardial sac?
Pericarditis
What beat is consistent of closure of the AV valves
S1
What beat is consistent of closure of the aortic/pulmonic valves?
S2
What condition is known as narrowing, stiffness, or thickening - reducing blood flow?
Stenosis
What condition is known as back flow due to improper valve closure?
Regurgitation
What condition is known as valve inverts due to size and chord tendinae rupture/stretch
Prolapse
What law is known as the amount of blood flow pumped out of the heart is dependent upon the amount of blood flowing into the right heart?
Starling Law
What kind of cells are specialized tissue able to generate or conduct an electrical impulse?
Pacemaker cells
What kind of cells able to contract when electrically stimulated; do not normally generate an impulse on their own?
Myocardial cells
What is the outcome when cell is at rest, membrane becomes more permeable to Na+/K+ that enter cell?
Depolarization
What is it called when cells will not respond to a stimulus?
Absolute refractory period
What is it called when cells will respond to a stronger than normal stimulus?
Relative refractory period
What is it called when cells will respond to a weaker than normal stimulus?
Supernormal period
Where is the SA node located?
Anterior to SVC posterior portion of Right atrium
What is the blood supply to the Bundle of HIS?
LAD artery
Where is the AV node located?
behind the tricuspid valve near the opening of the coronary sinus