Flashcards in Cardiovascular Phys - Red Book Deck (56)
Cardiac Mechanism is a 2 step pump. 1st step is what? 2nd step?
1st - atrial contraction
2nd - ventricular contraction
What is diastolic phase - atria fills _______ ventricle.
Ventricles are ____% full before atrial contraction.
What valves close and open during systolic phase?
Close - AV valves (tricuspid and mitral)
Open - Semilunar valves (aortic and pulmonary)
First heart sound? Stage? Event?
Closure of AV valves
Second heart sound? Stage? Event?
Closure of semilunar valves
What is the electrophysiology conduction system?
SA node --> Intermodal Pathways --> AV node --> Bundle of His --> Purkinjie fibers --> Ventricles
ECG - P wave
ECG - QRS wave
ECG - T wave
ECG - U wave
Papillary muscle repolarization
Hemodynamics - Poisulle's Law - Flow is proportional to what?
Radios of tube (to 4th power)
Hemodynamics - Poisulle's Law - Flow is INVERSELY proportional to what?
Flow = what?
Effect of Vagal or ACh on heart?
Decreases contraction strength
Decreases velocity of conduction
Effect of Sympathetic or NE on heart?
Increases HR & force
Opens calcium channels
Hyperkalemia effect on heart?
Hypokalemia effect on heart?
Increases HR (initially)
Decreases HR (eventually)
Hyper/Hypokalemia is what?
Abnormally high or low potassium in blood
Circulatory Pressure (mm Hg) in Right Atrium.
2 mm Hg
Circulatory Pressure (mm Hg) in Right Ventricle.
25 mm Hg
Circulatory Pressure (mm Hg) in Pulmonary Artery.
15 mm Hg
Circulatory Pressure (mm Hg) in Pulmonary Veins.
5 mm Hg
Circulatory Pressure (mm Hg) in Left Atrium.
5 mm Hg
Circulatory Pressure (mm Hg) in Left Ventricle.
120 mm Hg
Lymphatic system pressure?
-6 to +5 mm Hg
Lymphatic system flow per day?
Right lymphatic drain to?
Right lymphatic duct
Left lymphatic drain to?